题目内容
(请给出正确答案)
[主观题]
We use () to distill fresh water from sea waterA.sea water pumpB.fresh water pumpC.fresh
We use () to distill fresh water from sea water
A.sea water pump
B.fresh water pump
C.fresh water generator
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We use () to distill fresh water from sea water
A.sea water pump
B.fresh water pump
C.fresh water generator
第2题
A.open
B.close
C.opens
第3题
A.bad exhaust valves
B.leaking fuel injecting
C.both A and B
第4题
A.water-tube
B.fire-tube
C.exhaust gas
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