10平方分米=______平方厘米30000平方米=______公顷.
(1)10平方分米=1000平方厘米,
(2)30000平方米=3公顷.
故答案为:1000,3.
作W/O型乳化剂()。
A.HLB值3~8
B.HLB值8~16
C.HLB值7~9
D.HLB值15~18
E.CMC-Na
用所给单词的适当形式填空
1. It's seven o'clock. Let's start _____(have) dinner.
2. I met an old friend while _____(walk) on the street.
3. It's too _____(noise) here. Let's go somewhere quiet.
4. It's rude _____(stick) your chopsticks into your food.
5. Who is _____(young) student in your class?