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【单选题】
顺序阀与溢流阀的主要区别是：( )。A.
溢流阀出口压力为零，顺序阀出口通常有压力
B.
溢流阀由进口压力控制，顺序阀只能由外部压力控制
C.
溢流阀为常闭，顺序阀为
D.
溢流阀为内泄，顺序阀只能为外泄
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举一反三
【单选题】The author of the report is well ______ with the problem in the hospital because he has been working there for many years.
A.
acquainted
B.
informed
C.
enlightened
D.
acknowledged
【简答题】How two schools are trying to deal with the problem.
【简答题】Managers in the companies would have to deal with the problem of disclosure.
【单选题】The president promised that the government would take measures to deal with the problem.
A.
search
B.
explore
C.
invest
D.
handle
【单选题】The author argues that dealing with the problem of pronunciation in the wrong way is ______ .
A.
a fundamental consequence of not speaking well
B.
a consequence of not understanding the problem correctly
C.
an obvious cause of not grasping the problem correctly
D.
not an obvious cause of speaking poorly
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