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【单选题】
具有急回特性的平面连杆机构中行程速比系数__A.
K=1;
B.
K<1
C.
K>1
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反馈参考答案：
举一反三
【简答题】戊糖磷酸途径(PPP)的生理意义是什么?
【简答题】说明EMP—TCA途径和PPP途径的特点及生理意义。
【单选题】The townspeople held a celebration when work on the ______ of the ancient building had been completed.
A.
re-establishment
B.
restoration
C.
reproduction
D.
reparation
【单选题】Everything he ________ away from him before he returned to China.
A.
took
B.
had been taken
C.
had had been taken
D.
had taken
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