问题
判断题
当离心泵发生的汽蚀后，应检查吸入罐液位是否正常、吸入口及泵体温度是否过高、泵入口压力是否较低。
答案
参考答案：对
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当离心泵发生的汽蚀后，应检查吸入罐液位是否正常、吸入口及泵体温度是否过高、泵入口压力是否较低。
参考答案：对
| Look and choose the proper sentences. 看图，选择合适的句子。 |
 1. ( ) |  2. ( ) |  3. ( ) |
 4. ( ) |  5. ( ) |  6. ( ) |
| A. An airplane is fast. B. — Mum, may I go on a trip to Beijing? — OK, Li Ming! You work hard in school. You may go. C. We go on a trip by train. D. Jenny and Danny arrive in Shijiazhuang on January 19th. E. I love to go on trips. F. Danny and Jenny leave Canada on January 18th. |