A.hoisting；luffing；slewing
B.lifting；raising；lowering
C.rotating；raising；handling
D.hosting；lowering；moving
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A.length
B.slack
C.height
D.rotation direction
A.boilers
B.bow thrusters
C.stabilizers
D.hatch covers
A.a motor-driven steering wheel
B.a pneumatic steering wheel
C.a hand-driven steering wheel
D.an electric steering wheel
A.the tiller arms
B.the swivel blocks
C.hunting gears
D.the rams
A.horizontal axis
B.crankshaft
C.vertical axis
D.camshaft
最新試題
Thermostatic expansion valves can be adjusted for （）.
The general purpose of a heat exchanger is to （）.
If you are given the job of adding hydraulic fluid to a mooring winch, and are not certain as to the type of fluid to use, you should （）.
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump （）.
Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?（）
When the steering gear is in operation, you should （）.
The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its （）.
The temperature differential occurring between the inlet temperature of the fluid to be cooled and the outlet temperature of the cooling medium in a shell-and-tube heat exchanger is greatest in which of the flow designs listed?（）
A pressure drop through the refrigerant liquid line may cause （）.
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?（）