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If a hydraulic pump on a winch accidentally stops while hoisting,the load will stay suspended because().
A . a check valve will close that prevents reverse circulation
B . a centrifugal counterweight counteracts the force of gravity
C . the electric pump motor cut out
D . the control lever will move to the stop positio
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Which of the following will be a consequence of defining the column IDCOL2 in TABLE2 as a foreign key referencing the primary key (IDCOL1) of TABLE1?()
A . DB2 will no longer allow updating the value of IDCOL1 in TABLE1.
B . When inserting a row in TABLE2, the only values that DB2 will allow for IDCOL2 are the existing values of IDCOL1.
C . When inserting a row in TABLE2, DB2 will only allow foreign values for IDCOL2, that is values which do not exist in IDCOL1.
D . When a SELECT statement joins TABLE1 with TABLE2, DB2 will automatically add the condition TABLE1.IDCOL1=TABLE2.IDCOL2 if not specified in the statement.
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If a hydraulic pump on a winch accidentally stops while hoisting,the load will stay suspended because().
A . a check valve will close that prevents reverse circulation
B . a centrifugal counterweight counteracts the force of gravity
C . the electric pump motor will cut out
D . the control lever will move to the stop positio
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You are signing on a deck officer,who will be designated as one of the GMDSS operators,before sailing foreign.Which statement is TRUE().
A . He/she must have an STCW certificate endorsed as“Valid for Service on Vessels Operating in the GMDSS System”
B . He/she must present either an FCC-issued license or a Coast Guard-issued license
C . You must consult the“List of Qualifications”on the reverse of his/her FCC-issued license
D . His/her Merchant Mariners Document must have an added endorsement as “Radio Electronics Officer&rdquo
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4.Who will find it difficult to find a partner in 2050?
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Anyone who doesn’t have a reservation is taking a chance unless you don’t really care whether you have a place to stay.
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In foreign exchange market, with a 100 to 1 leverage, an investor who has a $5,000 forex market account, can trade __________ worth of currency.
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In foreign exchange market, with a 50 to 1 leverage, an investor who has a $5,000 forex market account, can trade __________ worth of currency.
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The foreign students who reveal their wealth are recognized as “__________” groups and likely to be involved in crimes, so, don't show off your wealth and don't reveal your identity as a foreign student.
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When in a crowded situation, what will foreigners do to show the physical contact is involuntary (not a choice)?
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According to Mr. Davis, who will most probably be the singer of a rock band?
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If employees of a bank gamble in foreign exchange dealings with the bank's money, the bank will suffer heavy losses of foreign currencies.
A.Right
B.Wrong
C.Doesn't say
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It is still a question______who will be responsible for this matter.
A.at hand
B.at last
C.at issue
D.at least
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Many Americans fear that American competiveness may be threatened by foreign students who will________.
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According to Gallagher and Skenazy, children who are watchful will be better able to stay away from _____.
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In planning a vacation, you need to decide on many things—where you will go, how long you will stay, what hotel you will stay at, what you want to see, and how much money you will spend. Travel packages are arrangements made by a travel agent or travel company to cover your vacation plans. These arrangements may include any of the following: air travel, hotels, meals, and such extras as sightseeing. Before making a decision on your travel plans, look into several packages to compare what they offer.
ENJOY FAMILY FUN IN HISTORIC
WILLIAMSBURG
THREE-NIGHT SPECIAL
(includes hotel, breakfast, sightseeing)
$120 per adult, double occupancy
Mon.—Thurs., excluding holiday periods
STAY
at the Colonial Motel
-Up to two children under 15 stay free
-Free breakfast
-Free parking
-Free swimming pool and game room
VISIT
the Historic Past
-Free full-day guided tour of Williamsburg
-Sights include the capitol building, Bruton Parish Church, Governor's Palace, and restored homes on Duke of Gloucester Street
DINE
in Historic Williamsburg
-Midweek Special includes one dinner for two at any of three free restaurants(Up to $20.@00 per person)
ENJOY
Other Family Attractions
-For just $20 a day, you can rent a car with unlimited mileage to visit nearby family attractions and amusement parks.
MAKE YOUR RESERVATIONS NOW!
PHONE "Sunstar Travel Group" TOLL FREE
800-553-6584
The Williamsburg package stresses ______.
A.family fun
B.sightseeing
C.luxury accommodations
D.car driving
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If you want to stay in a hotel which provides free parking and free breakfast, which telephone numbers will you dail to ask for farther information?
A.(703)979-3722 or (703)524-4300.
B.(703)524-4300 or (073) 418-12341.
C.(073)418-12341 or (703) 525-0300.
D.(703)525-0300 or (703)979-3722.
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Who most likely will discuss a historical topic?
A.Elizabeth Harris
B.Sun-Hee Lee
C.Courtney Bell
D.Daniel Foster
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英译汉:He has a foreign friend who lives in the United States.
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In any country the wages commanded by laborers who have comparable skills but who work in various industries are determined by the productivity of the least productive unit of labor, i.e., that unit of labor which works in the industry which has the greatest economic disadvantage. We will represent the various opportunities of employment in a country like the United States by symbols: A, standing for a group of industries in which we have exceptional, economic advantages over foreign countries; B, for a group in which our advantages are less; C, one in which they are still less; D, the group of industries in which they are least of all.
When our population is so small that all our labor can be engaged in the group represented by A, productivity of labor (and therefore wages) will be at their maximum. When our population increases so that some of the labor will have to be set to work in group B, the wages of all labor must decline to the level of the productivity in that group. But no employer, without government aid, will yet be able to afford to hire labor to exploit the opportunities represented by C and D, unless there is a further increase in population.
But suppose that the political party in power holds the belief that we should produce every thing that we consume, that the opportunities represented by C and D should be exploited. The commodities that the industries composing C and D will produce have been hitherto obtained from abroad in exchange for commodities produced by A and B. The government now renders this difficulty by placing high duties upon the former class of commodities. This meads that workers in A and B must pay higher prices for what they buy, but do not receive higher prices for what they sell.
After the duty has gone into effect and the prices of commodities that can be produced by C and D have risen sufficiently, enterprisers will be able to hire labor at the wages prevailing in A and B, and establish industries in C and D. So far as the remaining laborers in A and B buy the products of C and D, the difference between the price which they pay for those products and the price that they would pay if they were permitted to import those products duty-free is a tax paid not to the government, but to the producers in C and D, to enable the latter to remain in business. It is an uncompensated deduction from the natural earnings of the laborers in A and B. Nor are the workers in C and D paid as much, estimated in purchasing power, as they would have received if they had been allowed to remain in A and B under the earlier conditions.
When C and D are established, workers in these industries______.
A.receive higher wages than do the workers in A and B
B.receive lower wages than do the workers in A and B
C.are not affected so adversely by the levying of duties as are workers in A and B
D.receive wages equal to those workers in A and B
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A limited budget always means that you will end up staying in a cheap, dirty hotel. (
A limited budget always means that you will end up staying in a cheap, dirty hotel. ()
此题为判断题(对,错)。
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What's intense in a relationship is newness.That's why the great romances of literature are never between people who stay together.
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Next month we will pay a visit to Paris, __________we’ll stay for four days.
A.where
B.when
C.that
D.which
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If you get_______ in a foreign city, you’d better stay where you are and wait for your friends to come to your help.
A.lose
B.to lose
C.losing
D.lost