耐蚀(酸)非金属材料的主要组成包括有( )。
A.金属氧化物
B.氧化硅
C.硅酸盐
D.石棉
参考答案:A,B,C
He must have told you the news last night, _____? [ ]
A. doesn't
B. hasn't he
C. didn't he
D. mustn't he
下列不属肾虚证月经过少的主症是()
A.经量素少或渐少,色暗淡质稀
B.腰膝酸软,足跟痛
C.头晕耳鸣,小腹冷伴夜尿多
D.头晕眼花、心悸怔忡、面色萎黄
E.舌淡红,脉细