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【单选题】
配制“1.2.3”灌肠溶液50%硫酸镁,甘油和温开水用量分别是A.
30.60.90 ml
B.
90.30.60 ml
C.
60.90.30 ml
D.
30.90.60 ml
E.
60.30.90 ml
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【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.
A.
the most; the fewest
B.
more; fewer
C.
the many; the few
D.
the more; the fewer
【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. [ ]
A.
Most, mostly, almost
B.
Most, most, almost
C.
Most, almost, mostly
D.
Mostly, almost, most
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【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...
A.
complete
B.
commit
C.
submit
D.
perform
【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...
A.
complete
B.
commit
C.
submit
D.
perform
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