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单项选择题

凸轮与从动件接触的运动副属____
A、移动副
B、转动副
C、高副
D、螺旋副

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热门试题

单项选择题What is the meaning of “serve its purpose” and “every step of the way” in the sentence “From animal skin to linen, from cambric (麻布) to silk and cotton and to the various kinds of materials today, innovation served its purpose every step of the way.”

A．play its role / throughout the process
B．provide people with something they need / with all the sequences of foot movements
C．provide service / in somebody’s way
D．perform a particular function / along the flat surfaces in one's way

多项选择题下列哪种管理方式属于商业银行资产管理战

A． 预期收入分析
B．金融产品销售管理
C．商业性贷款管理
D． 资产转换管理