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【多选题】
同时影响盈亏平衡点、实现目标利润的销售量的因素是( )A.
目标利润
B.
所得税率
C.
固定成本
D.
销售量
E.
单位边际贡献
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【简答题】巴比妥类药物结构中含有（）结构。与碱溶液共沸而水解产生（），可使红色石蕊试纸变（）。
【单选题】-Is this factory ______ we will have a short stay? -Yes, it is in this factory ______ we will have a big party. [ ]
A.
the one which; which
B.
the one where; that
C.
the one; that
D.
that; in which
【单选题】The first place _______ in the factory was the tool room.
A.
where we visited
B.
we visited in
C.
we visited
D.
which we visited
【单选题】Only the factory ____ yesterday ____ this kind of machines.
A.
did we visit; does it produce
B.
did we visit; produces
C.
we visited; produces
D.
we visited; does it produce
【单选题】If there is a shortage of factory laborers, we would expect
A.
the wages of factory laborers to increase.
B.
the wages of factory laborers to decrease.
C.
the prices of factory commodities to decrease.
D.
a decrease in the demand for substitutes of what this factory produce.
【单选题】以下关于山茛菪碱叙述不正确的是( )
A.
不产生心动过速、口干等副作用
B.
不易透过血脑屏障,中枢作用弱
C.
抑制腺体分泌和散瞳作用比阿托品弱
D.
治疗安全范围比阿托品大
E.
能改善微循环
【单选题】---- What about going swimming this afternoon , Tom? ---- ____. I have a test tomorrow, so I have to go over my lessons today.
A.
I’d like to
B.
I’ll take it
C.
I’d rather not
D.
I don’t think so
【简答题】巴比妥类药物分子结构中含有丙二酰脲基团，其特性反应为
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