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【单选题】
( )主要性能是不易溶于水,但熔点低,耐热能力差A.
润滑脂
B.
钙基润滑脂
C.
润滑脂
D.
石墨润滑脂
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举一反三
【简答题】标准羽毛球由()根羽毛组成。
【单选题】Why did Mark Twain call himself "the biggest liar in the country"?
A.
He didn't want others to know that he was a famous writer.
B.
He was trying to convince the game warden that he had lied about catching fish.
C.
He wanted to boast of how well he could write.
D.
He wanted the game warden to allow him to fish there.
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