题目内容

截止阀在管道上是有方向性的,一般阀门上都标有箭头,箭头方向代表介质流动方向。

A. 对
B. 错

查看答案

搜索结果不匹配？点我反馈

更多问题

截止阀在管道上是有方向性的,若无箭头标注,应按“高进低处”的原则进行安装。

A. 对
B. 错

Mark: Miss Wang, I want to 1 _ an evening train to Harbin so that I can get there the next morning. Do you know the schedule?Miss Wang: Yes. I have got a 2 _____ here.Mark: Is there a train leaving around 6?Miss Wang: 3 _ one at 6:15.Mark: When will it get there?Miss Wang: It will 4 there at about 8:00 next morning.Mark: That’s the one I need. Thank you very much.Miss Wang: You are 5 ____________ .

俄国文学白银时代的作品中仍有人道主义思想。()

A. 对
B. 错

给下列名词选择对应的解释。