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【多选题】
棘轮机构中的止回棘爪在工作中有什么作用?( )A.
静止可靠。
B.
防止棘轮的反转。
C.
提高棘轮转度。
D.
减少噪声。
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反馈参考答案：
举一反三
【单选题】Surprisingly perhaps , the biggest ___health risk for tourists traveling abroad is actually road traffic accidents.
A.
potential
B.
possible
C.
theoretical
【简答题】翻译4 Perhaps surprisingly, given the attention they often receive, web ads, attractive packaging and print ads appear to be far less influential factors.
【简答题】可用于 比较几个分属性质不同的观测值在各自数据分布中相对位置的高低 。
【简答题】Many job satisfaction studies, perhaps surprisingly, have found that often (a compensation package) ______________is not the most motivating factor for many employees.
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