抽出式通风的局部通风机位于进风巷道中,安全性好

题型:判断题

问题:

抽出式通风的局部通风机位于进风巷道中,安全性好

考点:矿井通风操作工矿井通风操作工题库
题型:判断题

Read and choose.

Dad: Which dog do you like?

John: I like the black dog.  It's taller than the white one.

Dad: Do you like the brown one?

John: I think I like the black one.  It is stronger.

Dad: I like the white dog.  It's younger.  Its tail is 6 cm long.

John: The black dog is 20 cm tall.

John: Can I get a new dog?

Dad: No, you have two dogs already!

1. Which dog does John like?        

A. The black dog.

B. The white dog.

C. The brown dog,

2. Is the brown dog stronger than the black dog?          

A. Yes, it is.

B. Yes, it can:

C. No, it isn't.

3. Which dog is younger?            

A.  The white dog is younger.

B.  The brown dog is younger.

C. The black dog is younger.

4. Can John get a new dog?       

A. Yes, he can.

B. I don't know.

C. No, he can't.

题型:判断题

一质点做简谐运动,其振动图象如图3,由图可知(    )

A.质点振动的振幅随时间变化

B.质点振动的频率为4Hz

C.在t=2.5s时,质点偏离平衡位置运动

D.在t=3s时,质点具有最大的动能

题型:判断题

患者,女,38岁,已婚。近几年形体渐胖,胸闷呕恶,倦怠乏力,月经停闭半年,平时带下量多色白,舌淡胖苔白腻,脉沉滑。尿妊娠试验阴性。治疗应首选:( )

A.血府逐瘀汤

B.苍附导痰丸

C.参苓白术散

D.开郁二陈汤

E.香砂六君子汤

题型:判断题

通电螺线管附近放置四个小磁针,如图所示。当小磁针静止时,图中哪几个小磁针的指向是可能的(涂黑的一端为N极)

A.a

B.b

C.c

D.d

题型:判断题

某工程项目,发、承包施工合同中约定防水工程保修期为3年,工程竣工移交使用后第4年发生防水渗漏,则施工单位()。

A.无须承担保修责任

B.须承担保修责任

C.发包人支付费用后予以维修

D.维修事宜另行协商

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