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【单选题】
( )不是离合器按压紧弹簧的形式分类。A.
钢板弹簧式
B.
多簧式
C.
中央弹簧式
D.
膜片弹簧式
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Thank you for all your hard work last week. I don’t think we ______ it without you.
A.
could have managed
B.
can manage
C.
could manage
D.
can have managed
【单选题】Thank you for all your hard work last week. I don’t think we ____ it without you.
A.
can manage
B.
could have managed
C.
could manage
D.
can have managed
【单选题】．---I give up. It’s too hard. ---Really? I__________you could make it through.
A.
think
B.
thought
C.
have thought
D.
am thinking
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