曲柄存在的条件是连架杆与机架中必有一个是最短杆，且最短杆与最长杆长度之和（）其余两杆长度之和。
A. 小于或等于
B. 大于
C. 等于或大于
The cooling system（） needs least maintenance work for in this kind of system（）
A. open；the minimum components
B. open；the high cooling efficiency
C. central；there are more coolers and a extra set of pumps
D. central；there is only one component contacts seawater
What are three of the fields used in defining a CSQ in IPCC Express Enhanced?（）
A. WrapUp Time
B. Service Level
C. Overflow CSQ
D. Agent Name
E. Automatic Work
F. CRS Applicatio
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