高血压伴心绞痛病人宜选用（） A.硝酸甘油 B.普萘洛尔 C.哌唑嗪 D.氢氯噻嗪

XYZ公司的两个分支之间用同步专线互连，使用HDLC作为封装协议。下面关于HDLC安全性的说法正确的是（）。

A.HDLC的安全性不如PPP那样丰富，HDLC只能使用PAP方式的验证。

B.HDLC的安全性不如PPP，它不支持PAP和CHAP验证，而仅能提供明文方式的验证。

C.HDLC的安全性不强，提供两种验证方式，但验证中的用户名密码都以明文的方式传送。

D.HDLC不支持验证。

When someone says, “Well, I guess I'll have to go to face the music,” it doesn’t mean he is planning to go to a concert. It is something far less pleasant, like being called in your boss to explain why you did this and did that, and why you did not do this or that. Terrible music, indeed, but it has to be faced. At some time or another, every one of us has had to “face the music”, especially as children. We can remember father’s angry voice: “I want to talk to you!” And only because we did not obey him. What an unpleasant business it was!

The phrase “face the music” is known to every American, old and young. It is at least one hundred years old. Where did the expression come from?

The first explanation came from the American novelist James Fenimore Cooper. He said, in 1851, that expression was first used by actors while waiting in the wings (舞台的两侧) to go on stage. After they got their clue(暗示) to go on , they often said, “It’s time to go to face the music. ” And that is exactly what they did face the orchestra (乐队) which was just below the stage.

An actor might be frightened or nervous as he moved on to the stage in front of the audience(观众) that might be friendly, or perhaps unfriendly, especially if he forgot his lines. But he had to go out. If he did not, there would be no play. So “face the music” came to mean: having to go through something, no matter how unpleasant the experience might be, because you knew you had no choice.

小题1:The expression “face the music” means ______.

A． plan to go to a concert

B．get one’s clue to do something

C．have to go through something far less pleasant

D．disobey what one's father says小题2:The passage tells us that the expression was first used by _____.

A．children

B．novelists

C．actors

D．audience小题3:In the last paragraph the Chinese meaning of the word “line” is _______.

A．老板

B．同事

C．角色

D．台词

何谓6kV厂用快切装置正常切换？

一批货物由甲公司运往中国青岛港，运输合同适用《海牙规则》。运输途中因雷击烧毁部分货物，其余货物在目的港被乙公司以副本提单加保函提走。丙公司为该批货物正本提单持有人。根据《海牙规则》和我国相关法律规定，下列哪一选项是正确的（）

A．甲公司应对雷击造成的货损承担赔偿责任，因损失在其责任期间发生 

B．甲公司可限制因无正本提单交货的赔偿责任 

C．丙公司可要求甲公司和乙公司承担连带赔偿责任 

D．甲公司应以货物成本加利润赔偿因无正本提单交货造成的损失

简述省煤器。