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【判断题】
摩擦式离合器是靠摩擦力来传递转矩的,所以发热量大,磨损大。A.
正确
B.
错误
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【单选题】某连续变量分为五组 t第一组为 40～50，第二组为 50～60，第三组为 60～70，第四组为70～80，第五组为 80以上。依习惯上规定 ()。
A.
50在第一组，70在第四组
B.
60在第二组，80在第五组
C.
70在第四组，80在第五组
D.
80在第四组，50在第二组
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【单选题】某连续变量分为五组，第一组为40—50，第二组为50—60，第三组为60—70，第四组为70—80，第五组为80以上，依照规定（ ）。
A.
50在第一组，70在第四组
B.
60在第二组，80在第五组
C.
70在第四组，80在第五组
D.
80在第四组，50、在第二组
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