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【单选题】
在常温下(25°C)测定正常运转的制冷系统,其高压为1.5MPa(表压),则系统里的制冷剂是( )。
A.
R22
B.
R12
C.
R11
D.
R134a
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【单选题】听力原文:The new branch office will be relocated in China, won't it? (A) No, our head office is located in Beijing. (B) Friday at the earliest. (C)Yes, the demand for our services is increasing there. (9)
A.
B.
C.
【单选题】一般而言,系统设计时PLC的 I/O点数可预留( )。
A.
10%
B.
5%
C.
30%
D.
20%
【单选题】—Taiwan is our Treasure Island, it is an important part of China. —Yeah, It lies the southeast of China and the east of Fujian
A.
in,on       
B.
in, to   
C.
on, to
【单选题】一般而言,系统设计时 PLC 的 I/O 点数可预留( )。
A.
5%
B.
10%
C.
20%
D.
30%
【单选题】一般而言,PLC控制系统设计时PLC的 I/O点数可预留( )。
A.
10%-15%%
B.
5%-10%
C.
30%以上
D.
20%-20%
【单选题】一般而言,系统设计时 PLC 的 I/O 点数可预留( )
A.
10%
B.
20%
C.
30%
D.
40%
【单选题】Our city is one of _________cities in china.
A.
the biggest
B.
biggest
C.
bigger
D.
the big
【简答题】无线传感器网络在现代农业中被广泛应用于________、________以及其他农业应用。
【简答题】词汇。 1. Hainan Island is in the ____ (南方的) part of China. 2. She couldn't ____ (接受) our invitation because she was too busy. 3. It's difficult for him to make a ____ (决定) now. 4. They were discussing t...
【判断题】普通股有权参与股东大会和分享商业银行业务经营的成果
A.
正确
B.
错误
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