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【单选题】
分套练习/第二套 29. 关于制动过程出现的情况,哪种说法是错误的?( )P108A.
前轮先抱死拖滑,然后后轮抱死拖滑,是稳定工况,附着条件较好
B.
后轮先抱死滑移,然后前轮抱死滑拖 ,是不稳定工况,中、后轴可能出现侧滑
C.
前、后轮同时抱死拖滑,可避免后轴侧滑,前轮在最大制动强度下失去转向能力
D.
后轮先抱死滑移,然后前轮抱死滑拖 ,附着利用率低
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【单选题】中国药典规定，“精密称定”系指称取重量应准确至
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