A.hydraulic steering
B.follow-up steering
C.remote control steering
D.air controlled steering
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A.An expansion valve
B.An evaporator
C.A thermostat
D.A condenser
A.servo-motor
B.swash plate
C.plunger
D.cylinder
A.a change-over chest
B.a head tank
C.a emergency bilge pump
D.an air cooler
A.the hunting gear
B.the rudder stock
C.the rudder controller
D.the feedback unit
A.the control rod
B.the hunting gear
C.the floating ring
D.the tiller arm
最新試題
Thermostatic expansion valves can be adjusted for （）.
The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.
If the head pressure of a reciprocating refrigeration compressor is excessive, （）.
A salinity indicator is used to determine the （）.
One cause of high head pressure occurring in a refrigeration system can be （）.
Which of the listed pumps is NOT a positive displacement pump?（）
An increasing head pressure in a refrigeration system, without any corresponding change in the cooling water inlet temperature, would probably be caused by （）.
On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is （）.
Low compressor head pressure in a refrigeration system can be caused by（）.
When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should （）.