Communication satellites generally use solar cells as their source of electric power, although some test satellites have used th

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问题 Communication satellites generally use solar cells as their source of electric power, although some test satellites have used thermoelectric generators.

选项 A、superior
B、authorized
C、former
D、experimental

答案D

解析

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本试题收录于：职称英语综合类基础题库职称英语分类

职称英语综合类基础

职称英语

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Communication satellites generally use solar cells as their source of electric power, although some test satellites have used th

职称英语综合类基础

职称英语

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