快捷方式就是一个扩展名为________的文件。
A．．dll
B．．lnk
C．．com
D．．exe
参考答案：B
临床常用的脂蛋白电泳技术是()
A．醋酸纤维薄膜电泳
B．SDS-聚丙烯酰胺凝胶电泳
C．琼脂糖凝胶电泳
D．等电聚焦电泳
E．转移电泳
________，he never seems able to do the work beautifully.
A．Try as he does
B．as he tries
C．Try as does he
D．As he does try
