2. 外语
  3. Control of these emissions by adequate gas-cleaning processing is essential. The underlined part means______.

Control of these emissions by adequate gas-cleaning processing is essential. The underlined part means______.

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问题 Control of these emissions by adequate gas-cleaning processing is essential. The underlined part means______.
选项 A、abundant
B、sufficient
C、accurate
D、satisfactory
答案B
解析 语义理解题。adequate意为“充足的；适当的；胜任的”，而sufficient意为“足够的；充分的”，两者意思相同，故[B]为答案。abundant意为“丰富的；充裕的；盛产的”；accurate意为“精确的；正确的”；satisfactory意为“满意的；符合要求的”。
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