搜题请搜索小程序“爱下问搜题”
问题 多项选择题

防止过热蒸汽污染的主要措施有（）。

A、保证减温水水质；

B、防止减温器泄露；

C、防止过热蒸汽安装、检修期间残留在过热系统中的杂志污染；

D、适当降低过热蒸汽压力。

答案

参考答案：A, B, C

单项选择题 A1/A2型题

为减少局麻药的吸收，常添加肾上腺素，适宜的浓度为（）。

A.1：200万

B.1：20万

C.1：2万

D.1：0.2万

E.1：50万
查看答案
单项选择题

A beautiful young woman stopped a taxi in a big square and said to the driver, "Do you see that young man at the other side of the square" "Yes," said the driver. The young man was standing outside a restaurant and looking at his watch every few seconds. "Take me over there," said the young woman. There were a lot of cars, buses and trucks in the square, so the taxi driver asked, "Are you afraid to cross the street" "Oh, no." said the young woman. "But I said I would meet that young man for lunch at one o’clock, and it is now a quarter to two. If I arrive in a taxi, it will at least seem that I have tried not to be too late.\

Did the young woman try not to be so late
A. Yes, she tried her best though she could not get there on time.
B. No, she was just going to fool the young man.
C. No, she thought it was better to be late than to be early.
查看答案