货车刚做完段修后,其上、下心盘间的接触状态为()。
A、液体摩擦
B、半液体摩擦
C、半干摩擦
D、干摩擦
参考答案:C
Corporations and labor unions have______great benefits upon their employees and members as well as upon the general publiC.
A.conferred
B.granted
C.flung
D.submitted
以利润作为预算主题的企业,以管理者为核心