水泵不吸水，真空表指示高度真空，原因是底阀没打开或过滤水部分淤塞。
参考答案：对
用所给词的适当形式填空。
1. You can learn e - mail English easily by _______(you).
2. E-mail English is a new kind of _______(write) English.
3. In China, people eat with _______(chopstick).
4. You are _______(suppose) to come here alone.
5. What do people do in ______(west) countries?
以过去经历过的运动或做过的动作为内容的记忆，称为（）
A.错觉
B.记忆
C.理解性
D.形象记忆
E.运动记忆
