A.heat-resisting acrylic
B.heat-resisting aluminum
C.insulating varnish
D.insulating white lead
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A.hydrogen chloride
B.calcium chloride
C.sulfuric acid
D.muriatic acid
A.can be reset to energize the circuit
B.should open the circuit when overloaded
C.will burn out when an over current flow develops
D.All of the above
A.limit
B.monitor
C.modulator
D.interlock
A.relative speed of the rotor poles
B.number of turns of wire in the armature coil
C.strength of the magnets used
D.output voltage
A.loss of residual magnetism
B.absorption of moisture in the insulation
C.insulation varnish flaking
D.dirt collecting on the windings
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（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish
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If separating effect is not good, which measure should be taken （）
（） is not installed on the main switchboar.
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
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During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.