永久性避孕的方式为()。
A.吸宫术
B.绝育术
C.使用避孕套
D.口服避孕药
E.放置宫内节育器
参考答案:B
There is no doubt that students ________in their study if they more praise from their teachers.
A.will make progress; will get
B.make progress; get
C.will make progress; get
D.make progress; will get
包衣过程应选择的材料
隔离层
A.丙烯酸树脂Ⅱ号B.羟丙基甲基纤维素C.虫胶D.滑石粉E.川蜡