A.To work
B.Working
C.Having worked
D.worked
您可能感興趣的試卷
你可能感興趣的試題
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
最新試題
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
The main purpose of port State control is not to（）
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
Diesel engine air start system check valves are opened by （）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
Using a file without a handle may result in （）
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
The cetane rating of diesel fuel is an indication of the （）
The shipboard oil pollution emergency plan will be invalid after （）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）