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The best way to determine if a load is within maximum lift limits is to use().
A . a boom angle indicator
B . a load weight indicator
C . material invoices for shipping weights
D . prior experience with similar lift
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A definite advantage of using water as a fire extinguishing agent is its characteristic of().
A . alternate expansion and contraction as water in a liquid state becomes a vapor
B . absorption of smoke and gases as water is converted from a liquid to a vapor
C . rapid contraction as water is converted from a liquid to a vapor
D . rapid expansion as water absorbs heat and changes to steam
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The purpose of a preventer as it is used on a conventional yard and stay cargo rig is to().
A . allow greater than normal loads to be handled by the gear
B . act as an inboard guy in the event the inboard guy parts during cargo handling
C . assist the outboard guy in supporting stresses during cargo handling
D . prevent the inboard guy from parting due to stresses during cargo handling
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If an emergency pump control is used as the emergency shutdown on a tanker,it must().
A . stop the flow of oil at the main deck manifold
B . prevent the oil from leaving the shore facility
C . prevent the oil from siphoning through the pump
D . None of the above
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Which of these is not used as a monitoring tool?()
A . CLI commands
B . email alerts
C . SNMP traps
D . policy trace
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The simplest method to use for determining if a centrifugal pump is operating as designed, is to ().
A . closely observe the pump discharge temperature
B . close off the discharge valve, and watch for a rise in pressure
C . momentarily close off the suction valve, and watch for a rise in pressure
D . use a clamp on ammeter and compare the readings to past record
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If an air compressor is used to supply compressed air to outlets throughout the engine room and on deck of a vessel, the system is known as the ().
A、combustion control air system
B、supply air system
C、ships service air system
D、low pressure deck air system
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Ammonia when used as a refrigerant is valuable because of its high efficiency, it is however ().
A . toxic
B . flammable
C . explosive
D . all of the above
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Ethanol is commonly used as a gasoline supplement, but it is currently about()methanol.
A . twice as expensive as
B . twice as more expensive as
C . as twice more expensive as
D . as twice expensive a
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What is NOT used as a stern tube bearing,on a large vessel? ()
A . Wooden (lignum vitae) strips
B . Hard rubber
C . Resin bonded composition
D . Bronze bushing
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A vessel not using a traffic separation scheme shall avoid it by as wide a()as is practicable.
A . margin
B . legend
C . legion
D . maide
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If a seaplane is not used as a means of transpiration on water but is capable of being used so,it shall().
A . be regarded as a vessel not under command
B . be regarded as a vessel underway
C . be regarded as a vessel
D . be regarded as a sailing vessel
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A term used to describe the dip in a towline that acts as a shock absorber is().
A . catenary
B . step
C . shock dip
D . bight
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The vertical distance between G and M is used as a measure of().
A . stability at all angles of inclination
B . initial stability
C . stability at angles less than the limit of positive stability
D . stability at angles less than the downflooding angle
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When a pencil is partly in a glass of water, it looks as if it ( ).
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“ 草芥 ” is normally used as a metaphor for something that is worth mentioning.
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If Jackie is as sick as you say ,she ___see a doctor.
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7. If there is any doubt as to the proper operation of a radar, which statement is TRUE?
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What is NOT mentioned as a use of the donations?
A.To update recycling lists.
B.To teach ordinary people.
C.To expand environmental services.
D.To support environmental activists.
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One is considered as a color blind man if_____.
A.he can see the difference between red and deep red
B.he can see the difference between blue and green
C.he can't tell the difference between orange and green
D.he thinks green is the same as blue
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A portfolio manager uses her valuation model to estimate the value of a bond as 125.482.Using the same model, she estimates that the value would increase to 127.723 if interest rates fell 30 bps and would decrease to 122.164 if interest rates rose 30 bps.Using these estimates, the effective duration of the bond is closest to:()。
:A.2.22
B.7.38
C.14.77
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If the DNA strand shown below is used as a template for RNA polymerase, what would be the sequence of the resultant mRNA following transcription 5’-CATTCCATAGCATGT-3’
A.5’-UGUACGAUACCUUAC-3’
B.5’-CAUUCCAUAGCAUGU-3’
C.5’-GUAAGGUAUCGUACA-3’
D.5’-ACAUGCUAUGGAAUG-3’
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A class AB transistor amplifier using complementary transistors is biased by power supply that is ±18Vdc. The value of VCE(OFF) for either transistor is approximately equal to ______.
A.8 V
B.10 V
C.18 V
D.36 V
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Small talk is more interesting if you use open-ended questions that invite more than one-word responses as answers.()
此题为判断题(对,错)。