可用于制备亲水凝胶型骨架片()
A.羟丙基甲基纤维素
B.单硬脂酸甘油酯
C.大豆磷脂
D.无毒聚氯乙烯
E.乙基纤维素
参考答案:A
They’re true friends and their friendship the tests of life and death.
A.has gone through
B.was going through
C.goes through
D.will go through
木器常用的硝基纤维素涂料又称()等。
A.硝基漆
B.喷漆
C.蜡克
D.清漆
E.瓷漆