问题
多项选择题
齿轮泵不吸油的原因可能是（）。
A.间隙太小
B.泵转速太高
C.间隙过大
D.泵排出管路不畅通
答案
参考答案：A, B, D
搜题请搜索小程序“爱下问搜题”
齿轮泵不吸油的原因可能是（）。
A.间隙太小
B.泵转速太高
C.间隙过大
D.泵排出管路不畅通
参考答案：A, B, D
完型填空(每题1分,共10分) One day Wang Ping’s class 1 an English test. The teacher marked(批改)the students’ papers and then gave them back to the students. Wang Ping looked at her paper. She 2 her marks(分数): It was 85. Class was over. The students all 3 out and played on the ground, 4 Wang Ping still sat there. She didn’t leave, but 5 the exercise again(又,再), 6 she gave her paper to the teacher. This time she got the exercises right. One of her classmates 7 her, “Why did you do the exercise again? You won’t get 8 mark for that.” Wang Ping answered 9 a smile(微笑). “I don’t study 10 marks only.”
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