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问题 判断题

饼粕类饲料中以豆饼粕质量最好。

答案

参考答案：对

选择题
一 _____?
— That would be great! Please drop me off at the library.

A. Could you bring me the bill
B. Would you like me to give you a lift
C. Could you tell me the postcode for Paris
D. Would you like to have my e-mail address
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选择题

氨水中存在下列的电离平衡：NH3·H2ONH＋OH－要使平衡向左移动，同时使OH－离子浓度增大，应加入下列的(　　)

A．NaOH固体　　　　　　

B．NH4Cl固体

C．H2SO4

D．H2O
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