矫治反可用()
A.FR-Ⅰ型
B.FR-Ⅱ型
C.FR-Ⅲ型
D.FR-Ⅳ型
E.口外弓
参考答案:C
_____ of the money will go to the Red Cross to help those who need help.[ ]
A. Many
B. Much
C. A little
D. A few
测定缓、控释制剂释放度时,第一个取样点控制释放量在()
A.5%以下
B.10%以下
C.20%以下
D.30%以下
E.50%以下