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To safeguard the operator and other personnel working on or near a hoisting operation which of the following precautions should be observed?（）
A . Keep a load on the hoist until all personnel are finished working
B . Set the load on a movable dolly when transportation may be needed
C . Have one man keep a hand on the load to steady it
D . Insure that the lifting gear capacity is not exceeded
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When running a large, low-speed, main propulsion diesel engine on heavy fuel, which of the following precautions should be observed when switching back over to diesel oil?（）
A . The diesel oil must never be allowed to mix with the heavy fuel
B . The temperature of the fuel from the pre–heater should be gradually reduced after switching over the three–way valve
C . The heating steam to the pre-heater should be secured as soon as the diesel fuel passes through the three-way valve
D . The heating steam must be secured before the diesel oil passes through the three-way valve
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Which two statements are true if a NullPointerException is thrown on line 3 of class C？（）https://assets.asklib.com/images/image2/2018080115102280471.jpg
A . The application will crash.
B . The code on line 29 will be executed.
C . The code on line 5 of class A will execute.
D . The code on line 5 of class B will execute.
E . The exception will be propagated back to line 27.
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Given that c is a reference to a valid java.io.Console object，which two code fragments read a line of textfrom the console？（）
A . String s = c.readLine（）；
B . char[] c = c.readLine（）；
C . String s = c.readConsole（）；
D . char[] c = c.readConsole（）；
E . String s = c.readLine（"%s"， "name "）；
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A precaution you should take before bunkering is to （） .
A . plug the vents
B . plug the sounding pipes
C . plug the scuppers
D . close the lids on the vent
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Given that c is a reference to a valid java.io.Console object， which two code fragments read a line of text from the console？（）
A . String s = c.readLine（）；
B . char[ ] c = c.readLine（）；
C . String s = c.readConsole（）；
D . char[ ] c = c.readConsole（）；
E . String s = c.readLine（"%s"， "name "）；
F . char[ ] c = c.readLine（"%s"， "name "）；
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Which statement is FALSE concerning precautions during fueling operations?（）
A . All engines，motors，fans，etc. should be shut down when fueling
B . All windows，doors，hatches，etc. should be closed
C . A fire extinguisher should be kept nearby
D . Fuel tanks should be topped off with no room for expansio
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A c（） sentence contains two or more clauses， one of which is incorporated in the other.
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A Class C network address has been subnetted with a /27 mask.Which of the following addresses is a broadcast address for one of the resulting subnets?（）
A . 201.57.78.33
B . 201.57.78.64
C . 201.57.78.97
D . 201.56.78.97
E . 201.57.78.159
F . 201.57.78.254
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Which is NOT a safety precaution to be observed during the loading of LFG?（）
A . Report any leakage of cargo
B . Make sure the rake ends of the barge are completely dry and mopped
C . Ascertain that the hoses to be used are in good order
D . Be on the lookout for work being accomplished ashore in the vicinity of the barge
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What is NOT a precaution to be taken when topping off? （）
A . Reduce the loading rate
B . Notify the engine room of the procedure
C . Maintain communications with the dock man
D . Give the operation your undivided attentio
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Which of the listed precautions should be taken when cleaning the internals of a motor with compressed air?（）
A . Open the machine on both ends so as to allow the air and dust to escape
B . Be certain that the circuit breaker is opened and tagged on the feeder panel
C . Be certain that the air is clean and as dry as possible
D . All of the above
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Which one from A,B or C is the best choice in formal style?____ is the cause of the difficulty.
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You own a portfolio which consists of 150 shares of stock A, 100 sharesof stock B and 300 shares of stock C.The market price of stock A is $34. The price of stock B is $18 and the priceof stock C is $28. What is the portfolioweight of stock B?
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Which one from A,B or C is the best choice in formal style?Pat and ____ are w时ting a novel.
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______________ is known to all,English is important in international communication. A)Which B) That C) As D) Who
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Which one from A,B or C is the best choice in formal style? One must be patient if ____ want to succeed.
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Which of the precautions for insulin use is wrong？
A．Insulin should be kept cold
B．Avoid concussion when extracting liquid
C．Frequent replacement of subcutaneous injection sites
D．Inhalation of regular insulin before mixed injection
E．Use is to pay attention to the expiry date of drugs
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When ZTE's PTN devices interconnect with NNI side ports of F7-PTN devices to exchange 2M/STM-1 CES service, which of the following precautions is wrong？()
A.Two sides should in advance negotiate service VLAN on NNI interconnection ports, bind interface IP address of this VLAN, and notify each other of service loopback address (corresponding to LSR ID of Huawei's PTN devices)
B.Tunnel labels of the two sides must be the same.
C.PW labels of the two sides may be different.
D.Packet delay (corresponding to packet load delay of Huawei) at two sides must have the same configuration. It is suggested both sides use 500us.
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Click the Exhibit button. Given:Which two statements are true if a NullPointerException is thrown on line 3 of class C？ （）
<img src='https://img2.soutiyun.com/ask/uploadfile/2019-03-27/900591de4611848eaa661230b23f7c01.jpg' />
<img src='https://img2.soutiyun.com/ask/uploadfile/2019-03-27/096a8f1a86972212e5c4d4c53f88ec71.jpg' />
A.The application will crash.
B.The code on line 29 will be executed.
C.The code on line 5 of class A will execute.
D.The code on line 5 of class B will execute.
E.The exception will be propagated back to line 27.
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hen ZTE's PTN devices interconnect with NNI side ports of F7-PTN devices to exchange 2M/STM-1 CES service, which of the following precautions is wrong？()
A.Two sides should in advance negotiate service VLAN on NNI interconnection ports, bind interface IP address of this VLAN, and notify each other of service loopback address (corresponding to LSR ID of Huawei's PTN devices)
B.Tunnel labels of the two sides must be the same.
C.PW labels of the two sides may be different.
D.Packet delay (corresponding to packet load delay of Huawei) at two sides must have the same configuration. It is suggested both sides use 500us.
此题为多项选择题。
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Which is NOT the Four Cultural Value System？ A.Individualism & Collectivism B.Time Orientation C.Uncertainty Avoidance D.Power Distance
A、Time Orientation
B、Time Orientation
C、Time Orientation
D、Time Orientation
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If the reaction of 2A+B → C is a elementary reaction, which choice listed below is true（）
A．it is a second order reaction
B．it is a slow reaction
C．it is a second order reaction to B
D．it is a second order reaction to A
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You own a portfolio which consists of 100 shares of stock A, 300 sharesof stock B, and 250 shares of stock C.The market price of stock A is $34. The price of stock B is $18 and the priceof stock C is
A．29 percent
B．34 percent
C．37 percent
D．41 percent
