启动离心泵前盘车可以发现（）是否有摩擦。
A.叶轮与泵壳
B.轴与轴套
C.轴与轴承
D.轴与泵体
参考答案：A
把下列英语句子按顺序排列起来，组成对话。
(A)
1. To the clothes shop.
2. Hi, Alice! Where are you going?
3. Because I want to buy a new coat.
4. Why?
(B)
1. Because he wants to buy some new books.
2. Why?
3. To the bookstore.
4. Hi, Wang Ping! Where is Li Ming going?
登上救生艇筏后，应该将配备的淡水分配给遇难人员自己保管。（）
