A.reciprocating
B.diffuser
C.turbine
D.vane
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A.lower than
B.higher than
C.below
D.equal to
A.fire-tubes
B.furnaces
C.down-comers
D.soot-blowers
A.The domestic water
B.Bilge water
C.Oil transfer
D.The ballast
A.A cut-off lever
B.A swivel block
C.A cross-head
D.A driving gear
A.the piston rod
B.the tiller arm
C.the connecting rod
D.the rudder
A.fouled tubes in shell and tube condenser
B.too little or too warm condenser water
C.air or non-condensable gas in system
D.overcharge of refrigerant
A.The winch motor
B.The band brake
C.The winch barrel
D.The anchor capstan
A.The cable lifter
B.The hoisting motor
C.The topping wire
D.The life-raft
A.stays
B.winches
C.barrels
D.brakes
A.fire-tubes
B.furnaces
C.water drums
D.water wall tubes
最新试题
The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.
On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is （）.
If the suction pressure at the refrigeration compressor is below normal, the cause can be（）.
The major source of chemical contaminants in hydraulic fluid is （）.
Thermostatic expansion valves can be adjusted for （）.
An excessive charge of refrigerant in an air-cooled refrigeration system can cause （）.
One cause of high head pressure occurring in a refrigeration system can be （）.
A salinity indicator is used to determine the （）.
The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its （）.
The usual symptoms of cavitation in a centrifugal pump is （）.