问题
单项选择题
清理过滤器时，打开过滤器底都（），排净泵内前过滤器内的余液.
A.放空阀
B.排污阀
C.取样阀
D.止回阀
答案
参考答案：B
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清理过滤器时，打开过滤器底都（），排净泵内前过滤器内的余液.
A.放空阀
B.排污阀
C.取样阀
D.止回阀
参考答案：B
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| It was her giggling that drew my attention. Note taking really wasn't all that funny. Walking over to the offender , I asked for the__1__. Frozen , she refused to give it to me. I waited, all attention in the classroom on the quiet 2 between teacher and student. When she finally 3 it over she whispered , " Okay , but I didn't draw it. " It was a hand-drawn 4 0f me, teeth blackened and the words "I' m stupid" coming out of my mouth. I managed to fold it up calmly. My mind, 5 , was working angrily as I struggled not to 6 . I figured I knew the two most likely candidates for drawing the picture. It would do them some 7 to teach them a lesson,and maybe it was high time that I did it ! Thankfully, Iwas able to keep myself 8 . When there were about six minutes remaining, I showed the class the picture. They were all silent as I told them how 9 this was for me. I told them there must be a reason 10 and now was their chance to write down anything they needed to tell me. Then I let them write silently while I sniffed in the back of the classroom. As I 11 the notes later,many of them said something like, "I' ve got nothing 12 you. "or" I'm sorry you were hurt. " Some kids said , " We' re afraid of you. " But two notes , from the girls who I 13 were behind the picture, had a list of issues. I was too 14 ,too strict… | ||||
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