电动机按铭牌数值工作时,短时运行的定额工作制用S2表示。

题型:判断题

问题:

电动机按铭牌数值工作时,短时运行的定额工作制用S2表示。

考点:电工特种作业操作证电工上岗证电工上岗证题库
题型:判断题
通读下面短文,掌握其大意,然后在各题所给的三个选项中,选出一个最佳选项。
    Did you watch NBA 55'h All-Star Game? If you watched it, you wouldn't 1Shaquille O'Neal's (沙
奎尔?奥尼尔) wonderful play.
Shaquille O'Neal is in Miami Heat now. He was born on March 6th, 1972. He is 2. 16 meters tall.
When he was young, he was very 2 . His strong hands gave him a good start of life. Shaquille liked
playing 3 . But when he was a high school student in Grade Two, he wasn't good at basketball yet. Just
at that time, he 4 his good coach, Dale Brown. Then he began his hard practice. In 1992, he joined
NBA, 5 for Magic Team, then Lakers, and later Miami Heat in 2004. He had a great 6. He has joined
All-Star Game ten times, won NBA Finals MVP three times, 7 got the gold medals for the USA in the
Olympic Games. He was named one of the fifty 8 players in NBA history.
    Shaquille O'Neal is strong and tall. People call him "Large Shark" (大鲨鱼). But he is good at 9 too.
He has already had six CDs. It's really one of the happiest things in the world to listen to his CDs while
10 him play basketball.
( )1. A. remember
( )2. A. thin 
( )3. A. basketball
( )4. A. missed
( )5. A. playing 
( )6. A. idea  
( )7. A. and 
( )8. A. worst  
( )9. A. music 
( )10. A. making 
B. forget
B. sick
B. soccer
B. met   
B. singing
B. success
B. but   
B. slowest
B. history
B. helping
C. see        
C. strong    
C. volleyball
C. left      
C. dancing    
C. party      
C. although  
C. greatest  
C. math      
C. watching  
题型:判断题

下列说法中正确的是[ ]

A.不合理地开发和利用动物资源,会破坏生态平衡

B.生态平衡意味着生态系统内的所有生物数量保持不变

C.自然界中的物质是“取之不尽,用之不竭”的,因此生态平衡是永久的

D.所有消费者和周围环境形成的统一整体就是生态系统

题型:判断题

家鸽受精卵的发育开始于 [ ]

A.雌鸽体内

B.鸽卵产出之后

C.孵化时

D.孵化一段时期之后

题型:判断题

强度准则

题型:判断题

自动空调水温传感器用来修正以下哪个信号?()

A.鼓风机转速

B.空气混合风门位置

C.进风门位置

D.出风门位置

E.压缩机启停

F.散热器风扇启停

更多题库