下列哪项不符合盐酸麻黄碱（） A.为1R，2S（-）-麻黄碱 B.主要用于治疗支气管

阅读表达

     You may know the English letters A,B and C.But do you know there are people called ABC ?

You may like eating bananas.But do you know there is such a thing as a "banana person"? How

strange! Are these people from "another earth" ? No.They are just Chinese people like you and me.

     ABC means America-born Chinese.An ABC is a Chinese,but was born in the United States.

Sometimes,people call an ABC a "banana person".A banana is yellow outside and white inside.So,

when a person is a banana,he or she is white inside-thinking like a Westerner and yellow

outside-looking like a Chinese.Do you know why? Usually,ABCs know little about China or

the Chinese language.Some of them do not speak Chinese.Also,they are not interested in Chinese

politics.

     But if ABC cannot speak Chinese,can we still call them Chinese people? Yes,of course.They are

Chinese.They are overseas Chinese.These people may be citizens of another country, like the US,

England or Canada,but they have Chinese blood.Their parents,grandparents or even

great-grandparents were from China.They all have black eyes and black hair.But they are not

Chinese citizens.They are not people of the People's Republic of China.For example,we all know

the famous scientist C.N.Yang.He got the Noble Prize in 1957.Chinese people love him.But he

is an American citizen.

根据短文内容,完成下列句子。

1."ABC" in this passage means"_____________________".

2.Chinese in Western countries are called "banana persons"  because _____________________.

3.The underlined sentence means "______________________" in Chinese.

4.C.N.Yang is mentioned here to show that _______________________.

5.This passage mainly talks about ____________________.

风门和风门执行器是一回事吗？他们是如何在建筑空调中应用的？

检索职工表中工资大于800元的职工号，正确的命令是

A．SELECT职工号WHERE工资＞800

B．SELECT职工号FROM职工SET工资＞800

C．SELECT职工号FROM职工WHERE工资＞800

D．SELECT职工号FROM职工FOR工资＞800

简述“秘书意识”的主要内容。

UNIX下只有系统超级用户才能设置crontab文件，安排定时执行任务，这些任务一般是与系统管理相关的。