密封环安装在水泵吸水侧的填料箱中，以防止空气进入泵内。_爱下问搜题

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问题判断题

密封环安装在水泵吸水侧的填料箱中，以防止空气进入泵内。

答案

参考答案：错

填空题

用方框内所给词的适当形式完成短文。

always, animal, home, they, can't, parent, stay, well, run, kind, best

       Many people like  1   . Children like animals   2   . Usually we can only see dogs, cats, ducks or
chickens around us. We   3 see other animals such as elephants, tigers, pandas or monkeys. On
Sunday,  4 often take   5 children to the zoo. How happy the children are!They   6 from one place
to another. They give animals all   7 of good food to eat. They   8 there one hour after another. They
don't want to go  9   . Children    10 have a good time in the zoo.

问答题

（2005•兰州）完成如图中的家庭电路连接