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【单选题】
以下关于肾上腺素的叙述,不正确的是A.
含有邻苯二酚结构，还原性较强
B.
为酸碱两性化合物
C.
药用为左旋体
D.
不能口服使用
E.
只对β受体有激动作用
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【单选题】We regret ( ) entertain your order for our glass beaded bags as we are in short supply at present.
A.
not able to
B.
are unable to
C.
cannot
D.
our inability to
【简答题】In order to acquaint you with our business lines, we enclose a copy of our latest catalogue and pricelist covering the goods available for export at present.
【单选题】We regret____ entertain your order for our Green Beans as we are in short supply at present.
A.
not able to
B.
are unable to
C.
cannot
D.
our inability to
【简答题】Our multimillion nerve-cell central nervous system has its roots in the scattered nerve cells of tiny,lowly organisms that live in water half a billion years ago. Nerve cells evidently first appeared ...
【单选题】We regret ____ entertain your order for our glass beaded bags as we are in short supply at present.
A.
our inability to
B.
not able to
C.
cannot
D.
are unable to
【简答题】鲁迅唯一的一篇以青年爱情为题材的小说是《》。
【简答题】Our multimillion nerve-cell central nervous system has its roots in the scattered nerve cells of tiny, lowly organisms that live in water half a billion years ago. Nerve cells evidently first appeared...
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