解组站2#液压站的压力和流量分别是多少?
参考答案:其油泵为双连泵,其中142l/min供刮板清理推进推出油缸,其余由66l/min提供,系统压力7mpa。
She devoted herself _____ to her research and it earned her a good reputation in her field. [ ]
A. strongly
B. extremely
C. entirely
D. freely
按风险的对象来划分,风险可分为财产风险、责任风险和( )风险。
A.纯粹
B.投机
C.人身
D.自然