可控硅内部由()层半导体交叠而成。 A.1 B.2 C.3 D.4

题型:单项选择题

问题:

可控硅内部由()层半导体交叠而成。

A.1

B.2

C.3

D.4

考点:变电检修工考试变电检修高级工变电检修高级工题库
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阅读短文,根据短文内容判断正 (T) 误 (F)。

     This is a special class. The students come from different countries (国家). Some come from America,

others come from Canada, Japan, Australia and England. They speak different languages (语言). But all

of them can speak English. They are good friends.They study together, play together and live together,

and they help each other.

     All the teachers of this class are Chinese, but they can speak English. They teach their students in

English. They are very kind and friendly. They work hard.

     The students in this class study Chinese cooking and Chinese Kung Fu (功夫). All the students like

China. They say China is a great country and the Chinese people are friendly. And they are happy in

China.

( )1. The students all come from England.

(     )2. All of the students speak the same (相同) language.

(     )3. The teachers of this class teach the students in English.

(     )4. The students in this class only study cooking.

(     )5. The Chinese people are friendly.

题型:单项选择题

4个小正方体可以拼成一个大正方体。[ ]

题型:单项选择题

关于嫉妒,正确的说法包括()

A.一个人不会嫉妒世界上的所有人

B.嫉妒情绪会影响个人的思想、情感和行为

C.嫉妒具有对抗性

D.道德发展水平高的人不会有嫉妒情绪

题型:单项选择题

三相笼型异步电机的降压起动一般有那些方法,且各有什么特点

题型:单项选择题

读大气对地面的保温作用示意图,回答题。

图中太阳辐射、地面辐射、大气辐射、大气逆辐射的数字代号按顺序依次是()

A.①②③④

B.③④②①

C.④③②①

D.②③④①

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