厨房、卫生间里的脏水，通过下水管流到阴沟，我们却闻不到沟里的_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题选择题

厨房、卫生间里的脏水，通过下水管流到阴沟，我们却闻不到沟里的臭味，这种下水管的示意图是图中的（　　）

A．

B．

C．

D．

答案

答案：C

单项选择题

多立杆脚手架的立杆与纵、横向的扫地杆连接用（）固定。

A.直角扣件

B.旋转扣件

C.对接扣

D.承插件

补全对话，情景问答

补全对话，从方框中所给的选项中选择正确的句子补全对话。

A. How often should I take the medicine? B. Yes, I do.
C. I have a bad cold.
D. Good afternoon, young man.
E. About two days.

A: Good afternoon, Doctor Huang.
B: 1______ What's wrong with you?
A: 2______
B: Do you have a cough?
A: 3______ I cough now and then.
B: How long have you been like this?
A: 4______ And I'm feeling terrible now.
B: Let me check you over. Oh, you have a fever, too.
A: Is it serious?
B: Nothing serious. Take this medicine and drink more water.
A: 5______
B: Three times a day. Have a good rest and you'll be all right soon.
A: Thanks a lot.
B: Not at all.