A.protective earth
B.isolators
C.ground switch
D.circuit-breakers
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A.a closed loop control system
B.an open loop control system
C.a boiler control system
D.a steering gear control system
A.a manual closed loop
B.a manual opened loop
C.an automatic closed loop
D.an automatic opened loop
A.the absolute pressure
B.the gauge pressure
C.the vacuum pressure
D.the differential pressure
A.measured
B.recorded
C.transferred
D.controlled
A.a current will flow
B.a power will develop
C.a heat will flow
D.a pressure will produce
最新試題
The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）
（） is not installed on the main switchboar.
Using a file without a handle may result in （）
The main purpose of port State control is not to（）
Flame failure in an automatically fired auxiliary boiler can from a/an （）
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
The treatment of the fuel oils involves storage, heating, filtering and（）