更多"[单选题] The purpose of the tripping l"的相关试题:
[单选题] An LWT anchor often has difficulty tripping in ______.
A.Sand
B.Soft soil
C.Stiff clay
D.Heterogeneous soil
[单选题] What is the main purpose of DGPS?
A.Improve positioning accuracy
B.Decrease positioning accuracy
C.Reduce operational cost
D.I don't know
[单选题] What is the main purpose of dunnage?
A. To act as ballast for light vessels
B. To provide ventilation and drainage for cargo
C. To secure the tarpaulins in place
D. To support weakened builkheads
[单选题] The principal purpose of adjustment of the magnetic compass is to eliminate(消除) ______ as far as possible.
A. variation
B. compass error
C. deviation
D. earth's magnetic force
[单选题] What is the purpose of VRM control ?
A. To measure distance accurately
B. To measure bearing accurately
C. To measure range and bearing
D. To adjust radar monitor
[单选题] SeA.anchor是: ( )
A.海锚
B.海绵
C.手电
D.天棚
[单选题] The purpose of new technology is to make life easier, _____ it more difficult.
A. not make
B. not to make
C. not making
D. do not make
[多选题]The purpose of the United Nations are:
A. to maintain international peace and security.
B. to develop friendly relations among nations.
C. to achieve international cooperation in solving international problems.
D. to be a center for harmonizing the actions of nations.
[单选题]The purpose of annealing any metal is to make the metal
A.harder
B.tougher
C.softer
D.smoother
[单选题] What is the purpose of a Pedestal Roller?
A.To change the direction of lead on a mooring line
B.To secure a chain
C.To secure the eye of a mooring line
D.To facilitate towing
[单选题] What is the purpose of the radar reflector?
A. To make objects less visible
B. To make echoes weaker on the radar
C. To make large echoes smaller
D. To make small objects better visible
[单选题] The radar control used to reduce sea return at close ranges is the ______.
A.Gain control
B.Sensitivity time control
C.Fast time constant
D.Pulse length control
[单选题] If there is sufficient sea room, alteration of ______ may be the most effective action to avoid close-quarters situation.
A. speed and course
B. speed only
C. course only
D. speed or course
[判断题]Sea dye marker 可以用来驱赶鲨鱼。
A.正确
B.错误
[单选题] What is the purpose of the limit switch on gravity davits ________.
A.To cut off the power when the davits hit the track safety stops
B.To stop the davits from going too fast
C.To cut off the power when the davits are about 12 inches or more from the track safety stops
D.None of the above
[单选题] What is the purpose of the girders in the tank?
A. They support the stiffeners
B. They transfer all the sea forces acting on the plating
C. They support the stiffeners and take up some of the sea forces
D. I don’t know
[单选题] The purpose of the tricing pendants is to ______.
A.Control the fore and aft motion of a lifeboat during lowering
B.Control the outboard swing of a lifeboat during lowering
C.Provide suspensions for the manropes
D.Hold a lifeboat next to the embarkation deck while loading