The ship’s generator broke down, and the pumps had to be operated____instead of mechanically.

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问题 The ship’s generator broke down, and the pumps had to be operated____instead of mechanically.

选项 A、manually
B、artificially
C、automatically
D、synthetically

答案A

解析 本题为对立同现,与mechanically相对的应该是manually,即手工。其他选项automatically(自动地),artificially(人工地、假地),synthetically(综合地)都与mechanically不构成同现关系。
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