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【单选题】
对亲水病毒无杀灭作用的消毒剂是
A.
过氧乙酸
B.
戊二醛
C.
碘伏
D.
环氧乙烷
E.
苯扎溴铵
拍照语音搜题,微信中搜索"皮皮学"使用
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A.
q >0 °
B.
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C.
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【单选题】铰链四杆机构具有急回特性的条件是 。
A.
〉0
B.
≤0
C.
行程速比系数 K=1
D.
行程速比系数 K < 1
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【单选题】铰链四杆机构具有急回特性的条件是
A.
θ>0°
B.
θ=0°
C.
K=1
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【单选题】铰链四杆机构具有急回特性的条件是 。
A.
θ >0 °
B.
θ =0 °
C.
K=1
D.
K<1< /div>
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