WINDOWS中的回收站实际上是一个特殊的文件夹。()
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In 1979 an extensive ______ program was in progress throughout Suez Canal.
A dredge and widen
B. dredged and widened
C. dredging and widening
D. being dredging and widening
If , during helicopter refueling operations, fuel is spilled on clothing, the person should first_____.
A. see the medic immediately
B. spray himself with foam or CO2
C. complete his task and then see the medic
D. remove the clothing and wash
If you wear extra clothing when entering the water after abandoning ship it will ______.
A. weigh you down
B. preserve body heat
C. reduce your body heat
D. make it more difficult to bteathe
If you see anybody fall overboard, act as follows except ______.
A. tell an officer / crew the person’s position in the water, or telephone the bridge immediately
B. throw lifebuoys overboard
C. call out “ man overboard ” and keep your eyes on the person in the water
D. try to find medicine for the person to use when he is rescued
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