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【单选题】
离心泵启动前(),是为了防止气缚现象发生。A.
灌水
B.
放气
C.
灌油
D.
灌泵。
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反馈参考答案：
举一反三
【单选题】After a day’s hard work, I went back home ________.
A.
exhausting
B.
exhausted
C.
being exhausted
D.
having exhausted
【简答题】请将下面四句话中用拼音“de”标注的部分换成相应的结构助词。 1.彻底de解决问题是不容易的。( ) 2.问题彻底de解决了。( ) 3.问题解决de不彻底。( ) 4.问题得到了彻底de解决。( )
【单选题】What was the direct cause for the United States to enter the Second World War?
A.
Japan’s announcement of its “New Order” in Asia
B.
The Japanese air raid on Pearl Harbor of Hawaii
C.
Japan declared war against the US
D.
The British suffered repeated air raids by the German air force.
【多选题】在 PowerPoint 2016 的“视图”选项卡中,可以进行的操作有
A.
选择演示文稿视图的模式
B.
更改母版视图的设计和版式
C.
显示标尺、网格线和参考线
D.
设置显示比例
【单选题】The USA once ___ ___ war against Japan in 1945 and now it is bombing Libya.
A.
announced
B.
declared
C.
commented
D.
stated
【单选题】After half a day’s hard work, we made our classroom look as _______ as new.
A.
well
B.
better
C.
best
D.
good
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