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【判断题】
在switch...case...语句可以代替if...else...语句。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】He insisted that he _____ the best, so he insisted that he _____ the work all by himself. [ ]
A.
was; do
B.
be; do
C.
be; did
D.
had been; had done
【简答题】电动汽油泵按其安装位置可分为外装泵和 泵。
【单选题】If he ___ that he ____ to work there, everything would be OK now.
A.
insisted, be sent
B.
insisted, was sent
C.
had insisted, be sent
D.
had insisted, was sent
【简答题】电动机反转的方法 只需改变电动机旋转磁场的旋转方向,即改变输入电动机三相电源的 ( ),也就数 改变电动机任意两根引线的连接相序。
【简答题】电动汽油泵按其安装位置可分为外装泵和
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