【单选题】饮片用适宜溶剂提取,蒸去部分溶剂,调整浓度至每1ml相当于原药材1g的液体制剂是( )
【简答题】反应[Zn(NH3)4]2++4OH一→[Zn(OH) 4]2一+4NH3的平衡常数为 _________。已知K稳[Zn(OH)4]2-=3×1015,K稳[Zn(NH3)4]2+
【单选题】The manager told us that _______ careful we are, ________ mistakes we’ll make.
【简答题】已知K s ([Zn(OH) 4 ] 2- )=3.0×10 15 ,K s ([Zn(NH 3 ) 4 ] 2+ )=2.9×10 9 ,K b (NH 3 ·H 2 O)=1.8×10 -5 。
【单选题】of us enjoy the work, and the work is finished.We are students. [ ]
【简答题】When we listen to a person talking, the most important thing for us to do is_____
【单选题】Most of us think we know the kind of kid who becomes a killer, and most of the time we're right. Boys (1)_____ about 85% of all youth homicides, and in those cases about 90% (2)_____ a pattern in whic...
【单选题】Most of us think we know the kind of kid who becomes a killer, and most of the time we're right. Boys 【C1】______ about 85% of all youth murderers, and in those cases about 90% fall within a pattern 【C...