发动机一般采用压力润滑和飞溅润滑相结合的润滑方式。
参考答案:对
— No, I'm afraid he isn't in. This is his secretary speaking. Can I help you?
— _____.[ ]
A. Oh, you will.
B. Oh, that's a pity.
C. I should think so.
D. Well, I look forward to hearing from you.
肝硬化治疗原则哪项不对()
A.休息
B.高热量高蛋白饮食
C.肝炎引起的肝硬化抗肝炎治疗
D.高维生素饮食
E.忌用对肝脏有损害的药物