问题
填空题
为防止出口水管路内的水倒流使水泵（），在水泵出口管上应装设（）。
答案
参考答案：倒转、逆止门
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为防止出口水管路内的水倒流使水泵（），在水泵出口管上应装设（）。
参考答案：倒转、逆止门
| 根据短文内容，在方框内选择合适的词并用其适当形式填入空格内，每词仅用一次，有三词多余。 | |
am. on Saturday morning. They __2__ a taxi from the airport to their hotel in the center of Pairs. On Saturday afternoon, Lynn __3__ to the bookstore and __4__a lot of comic books. In the evening, they __5__ dinner in a French restaurant. On Sunday they __6__ the Louvre Museum where they __7__ the "Monalisa". They __8__ all the things in the museum and they __9__ very tired. They go home on Sunday evening. |