A.To work
B.Working
C.Having worked
D.worked
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A.to discharge
B.to be discharged
C.discharging
D.being discharged
A.to send
B.to be sent
C.for being sent
D.being to send
A.sub-boards
B.main switchboards
C.emergency switchboards
D.distribution boards
A.check for respiration
B.check for pulse
C.treat for shock
D.All of the above
A.plastic
B.metal
C.stainless steel
D.copper
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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
To proceed to the assistance of a ship in distress is（）
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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.
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If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
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Which of the following items don’t belong to dock repair works?（）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）