[单选] The designing of a satellite in the heavenly environment is not absolutely an easy job.

A . by all means
B . by any means
C . by every means
D . by no means

参考答案：

● 参考解析

【答案】D
【解析】by all means“一定”，by any means“无论如何”，by every means用得较少，意为“竭尽全力”，相当于by all means，by no means“决不”。

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