常用的静脉用乳化剂
A.泊洛沙姆
B.氢化蓖麻油
C.卵磷脂
D.吐温-80
E.新洁尔灭
参考答案:A,B,C
Film has a much shorter history, especially when such art forms as music and painting.[ ]
A. having compared to
B. comparing to
C. compare to
D. compared to
已知关于x的方程|x2-6x+5|=a有四个不相等的实数根,则a的取值范围是______.