题目内容

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

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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

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