怎样确定乳化液泵的流量?
参考答案:
乳化液泵的流量,是根据配套的液压支架、单体液压支柱或者其它配套的液压设备,每分钟所需要的乳化液量及乳化液损失量来确定。
Bungee jumping is an exciting activity, very popular among young adults, ________ courage matters
more than strength. [ ]
A. whose
B. that
C. of which
D. where
两个力偶等效的条件是()
A、力偶矩相等
B、力偶臂相等
C、两力偶的力相等
D、力偶矩相等转向相同