离心式压缩机未设置联锁的参数是（）。 A.润滑油总管压力 B.主推轴温 C.径向轴温

Never give out identifying information such as Name, Home Address, School name, or Telephone Number in a public message such as at a chat room or on bulletin bards. Never send a person a picture of you without first checking with your parents or guardian.

● Never respond to messages or bulletin board items that are: Suggestive / Obscene / Belligerent / Threatening / Make You Feel Uncomfortable.

● Be careful when someone offers you something for nothing, such as gifts and money. Be very careful about any offers that involve your coming to a meeting or having someone visit your house.

● Tell your parents or guardian right away if you come across any information that makes you feel uncomfortable.

● Never arrange a face-to-face meeting without telling your parents or guardian. If your parents or guardian agree to the meeting, make sure that you meet in a public place and have a parent or guardian with you.

● Remember that people online may not be who they seem. Because you can’t see or even hear the person, it would be easy for someone to misrepresent him or herself. Thus, someone indicating that“she”is a“12-year-old-girl”could in reality be an older man.

● Be sure that you are dealing with someone that you and your parents know and trust before giving out any personal information about yourself via E-mail.

● Get to know your“online friends”just as you get to know all of your other friends.

小题1:We can infer from the passage that            .

A．it is not safe to surf the internet

B．people now are no longer honest

C．we can chat with unfamiliar people online

D．people online are not who they are小题2:Which of the following is right according to the passage?

A．People online never tell their friends their real names.

B．You can often get something free from the internet.

C．Your friends online may want to meet you.

D．Online friends are not friends at all.小题3:What is the main idea of the passage?

A．How to surf the internet.

B．Kids shouldn’t surf the internet.

C．How to choose online friends.

D．How to protect yourselves online.

咳嗽初起，最易"闭门留寇"的是哪类药（）

A.苦寒药

B.温补药

C.收涩药

D.镇咳药

E.通下药

固定资产在大修理期间不再计提折旧。 ( )

如牵绳转索，左右弹手的脉象为

A．弦脉
B．沉脉
C．代脉
D．滑脉
E．紧脉

LED照明产品目前尚待改进的问题是（）。

A、LED产品的不一致性和不确定性

B、没有建立统一完善的产品规格、标准和质量分级

C、价格偏高

D、白光LED的颜色质量不尽人意