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【判断题】
叠加式液压系统结构紧凑、体积小、质量轻，安装及装配周期短。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】机场控制区应当根据安全保卫需要，划定为候机隔离区、（）、）和（）、（）等，并分别设置安全保护设施和明显标志。
【单选题】机场控制区应当根据( )的需要,划定为候机隔离区、行李分检装卸区、航空器活动区和维修区、货物存放区等,并分别设置安全防护设施和明显标志。
A.
保证安全
B.
正当防卫
C.
安全保卫
D.
安全防护
【单选题】Most of the crops are sold the market place.
A.
in a high price on
B.
with fair price at
C.
at a fair price in
【单选题】Mr. Smith found that gas from the pipe when he came back because we forgot to switch off. But at last we were lucky to escape .
A.
escaped, being punished
B.
was escaping, being punished
C.
escaped, punishment
D.
was escaping, punishing
【单选题】______ for a long time, most of the crops in this area died from lacking water.
A.
Being no rain
B.
There was no rain
C.
To be no rain
D.
There being no rain
【简答题】They feel that it is only a matter of time before there is an accident as a lot of the children walk to the school.
【单选题】stop【C6】______motorists and help when there is an accident.
A.
resting
B.
tired
C.
speeding
D.
drunken
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