细胞膜组成中,分子数最多的是
A.糖类B.脂质C.蛋白质D.糖脂E.胆固醇
参考答案:B
选用is或are填空。
1. She _____ a bit shy.
2. These ____ my teachers.
3. He ____ very clever.
4. Parrot ____ a very naughty bird.
5. They ____ very naughty.
下列哪些不是维持库存费用?()
A.物料费用
B.运输费用
C.保险费用
D.被盗费用
E.仓储设施折旧