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【多选题】
药物的基本作用和药理效应的特点是（ ）。A.
通过影响机体固有的生理、生化功能而发挥作用
B.
具有专一性和选择性
C.
具有治疗作用和不良反应两重性
D.
药理效应有兴奋和抑制两种基本类型
E.
选择性与药物的化学结构有关，与剂量无关
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【简答题】齿轮传动常见的失效形式有哪些?试说明各失效形式的原因及避免或减轻失效的措施。
【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
【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
【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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