第1题：
If the jacket water temperature rises rapidly above normal in a diesel engine, you should first
A.place standby cooler in operation
B.reduce engine load
C.check thermostatic valve
D.clean sea water strainer
第2题：
Once you have established the daily ration of drinking water in a survival situation，how should you drink it ________．
A.Small sips at regular intervals during the day
B.The complete daily ration at one time during the day
C.One-third the daily ration three times daily
D.Small sips only after sunset
第3题：
Water is the __46___ of all the things we eat and drink . Not many people understand this but __47____ quite true . The human body can go without ___48___ for a long time . We’ve got many examples for this . Yet two __49___ three days without water can usually make people __50____ . Man can’t live __51____ water .
Many people don’t understand how ___52__ water the human body needs __53___ work well , and many people , especially young people , do not drink enough , ___54__ in very hot weather . Our body has mostly water , about 65% to 75% . That is to say about two thirds of our body is water . When we do sports , some of the water will get away from our body . __55 _ we don’t drink some water , we won’t have enough water． And if we don’t have enough water , we’ll feel tired and many of us will get ill . So you know how important water is to us .
46.___________
( )46. A. important
B. most important
C. more important
D. different
第4题：
第5题：
第6题：
When you're _t_________ ,you should have some water．
第7题：
第8题：
A. any more than
B. no more than
C. much more than
D. no less than
第9题：
第10题：