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问题 单项选择题

操纵变量作用于对象，使偏离给定值的被控变量趋于给定值，这个作用称为（）。

A、控制作用

B、参数整定

C、自衡

D、过渡过程

答案

参考答案：A

单项选择题

(一)


Right is right. Right Of course. But is left wrong Well, the Romans used to think so. They thought left-handed people were mistakes of nature. Latin, the language of the Romans, had many Words that expressed this view. Some words we use today still have this meaning. The Latin word "dexter" means "right". The English word "dexterous" comes from this word. It means "handy" ( clever with hands). So, right is handy. But the Latin word for left is "sinister". The English word "sinister" comes from this word. Sinister means "evil" (very bad). Is it fair to call right-handed people handy and: left-handed people evil Well, fair or not, many languages have words that express such beliefs. In old English, the word for left means "weak". That isn’t much of an improvement over "evil".
Not very long ago, children were often forced to write with their right hands. Doctors have since found that this can be very harmful. You should use the hand you were born to use.
People who use their left hands are just starting to get better treatment. But why they get all these bad names in the first place One reason may be that there are not as many left-handed people as there are right-handed people. There is one left-handed person for every five right- handed ones. People who are different are often thought to be wrong. But attitudes do seem to be changing. Fair-minded right-handed people are finally starting to give left-handed people a hand.

After we read the article we can certainly know that ______.

A．left-handed people have been treated poorly

B．the number of the left-handed people is larger than that of the right-handed people

C．right-handed people are much cleverer than left-handed people

D．left-handed people are less smart but hardworking
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单项选择题

纳税人经营有应税服务与享受免税的销售货物，应当分别核算；未分别核算的，（）。

A.由主管税务机关核定应税服务的销售额

B.不得免税

C.免税

D.减税
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