下列材料中为无机非金属材料的是（）
A.硅橡胶
B.聚四氟乙烯
C.羟基磷灰石
D.聚乳酸
E.钛合金
参考答案：C
—Dad, I'm not sleeping well these days.
—_____.
—OK, I'll do that.[ ]
A. That sounds like a good idea
B. Really? You should go to see the doctor
C. I really want to win the prize
D. I am glad to hear that
我公司燃油母管压力为（）。
