盘柜内的配线电流回路应采用电压不低于（）V的铜芯绝缘导线.
A. 220
B. 380
C. 100
D. 500
To establish a communication channel for the telex service in the INMARSAT-A terminal, you should first（）.
A. establish a communication channel from the CES, via the International Telex network to the final destination
B. set up a communication channel from your SES, via a satellite, to a CES within your ocean region
C. set up a channel directly to the addressee at the destination
D. establish a channel from your terminal, via the International telex network to a CES within your ocean regio
某国的GNP小于GDP，说明该国居民从国外获得的收入（）外国居民从该国获得的收入。
A. 大于
B. 小于
C. 等于
D. 以上都有可能
由终端分析处理后产生的与经济运行或安全运行相关的报警，主要包括（）等事件。
A. 负荷过载
B. 计量门打开
C. 无功欠补偿
D. 无功过补偿
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