离子交换树脂的交联度
参考答案:
交联度是指交联剂在离子交换树脂内所占的质量百分数。
She was so sad because she failed in the math test. Let’s ______her _______.
A.leave … behind
B.leave … alone
C.leave … aside
D.leave … out
婴儿腹泻患者的粪便外观最可能是()
A.米泔样便
B.蛋花样便
C.脓血便
D.果酱样便
E.鲜血便