更多"In motor ship, （） is often used to "的相关试题:
[单项选择]Channel 13 is primarily used for ship to ship communication. Channel 13 is also authorized for（）.
A. coast to aircraft operational communications
B. aircraft to ship operational communications
C. lock & bridge communications
D. aircraft to ship navigational communications
[单项选择]Copper is often used as an electrical conductor because it （）.
A. has high resistance at low temperatures
B. has a highly polished surface
C. is able to pass current with little opposition
D. holds insulation together well
[单项选择]The davit aboard a ship is used to（）.
A. lower personnel down by a transfer basket
B. lower food and water to personnel in a life raft
C. lower the life raft down with its full complement
D. move equipment around the deck
[单项选择]（）on board ship are used to control and distribute the electrical energy generated by generators.
A. Governors
B. Alternators
C. Blackboards
D. Switchboards
[单项选择]Gear-type flexible couplings are often used in diesel engine drive trains because they（）
A. require no lubrication under normal operating conditions
B. compensate for gross misalignment in the drive train
C. are able to transmit high torque ,even where slight misalignment exists
D. will rapidly disconnect the engine from the line shaft
[单项选择]Nylon rope is often used in the makeup of a towline because it（）.
A. floats
B. stretches
C. handles easily
D. resists rot
[单项选择]Anchor capstans are used in some installation where the cable lifter rotates about a （）.
A. horizontal axis
B. crankshaft
C. vertical axis
D. camshaft
[单项选择]Valve cages are used on some large diesel engines to （）
A. reduce wear on the valve stem
B. permit the use of alloy valve seat materials
C. reduce heat transfer from the valve seat
D. facilitate valve removal for servicing
[单项选择]A carling is used aboard ship（）.
A. as a connecting strap between the butted ends of plating
B. to stiffen areas under points of great stress between beams
C. to prevent the anchor from fouling when the brake is released
D. to provide an extra heavy fitting in a heavy lift cargo rig
[单项选择]Anchor（） are used in some installations where the cable lifter rotates about a vertical axis.
A. windlasses
B. drums
C. capstans
D. warp ends
[单项选择]Fire extinguishers used on ship’s are numbered by size I through V，with I being（）.
A. used for electrical fires only
B. the smallest
C. the most accessible
D. the most effective
[单项选择]Compressed air is used on board ship （）.
A. for starting diesel engines
B. in pneumatic control system
C. in pneumatic tools
D. All the above are true
[单项选择]In a central cooling system, used in some modem ships, sea water is supplied to cool （）which will circulate to other individual cooler, greatly reducing the corrosion problems.
A. fresh water
B. sea water
C. cooling oil
D. emulsion
[单项选择]If some surveys refer to statutory survey and ship classification survey but occur temporarily, we call them （）
A. periodic survey
B. statutory survey
C. additional survey
D. annual survey
[单项选择]Compressed air is used on board ship for all the following purposes except （）.
A. starting diesel engines
B. pneumatic control systems
C. pneumatic tools
D. supercharging air
[单项选择]（）, so they are widely used on board ship nowadays.
A. Diesel engines have more advantages in comparison with gasoline engines
B. Diesel engines have more advantages in comparison to gasoline engines
C. Gasoline engines have more advantages in comparison with diesel engines
D. Gasoline engines have more advantages in comparison to diesel engines
[单项选择]When water is used to fight a fire on board a ship，the effect of the weight of the water must be taken into account. How much sea water will increase the weight displacement by one ton?（）
A. 64 cubic feet
B. 35 cubic feet
C. 100 gallons
D. 500 liters
