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【单选题】
β受体阻滞剂的降压作用机制描述错误的是A.
阻断心脏β1受体，减少心排出量
B.
阻断肾脏β1受体，抑制肾素分泌
C.
阻断突触前膜的β2受体，降低外周交感神经活性
D.
改变压力感受器的敏感性
E.
抑制前列环素的合成
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皮皮学刷刷变学霸
举一反三
【判断题】It is fair to say that an issue and a topic of conversation are the same thing.
A.
正确
B.
错误
【单选题】One of the reasons why men invented certain sounds to express thoughts and actions was that they could ______.
A.
combine them
B.
agree with certain signs
C.
write them down
D.
make themselves understand each other
【单选题】One of the reasons why men invented certain sounds to express thoughts and actions was that they could ______.
A.
agree with certain signs
B.
write them down
C.
make themselves understand each other
D.
combine them
【单选题】One of the reasons why men invented certain sounds to express thoughts and actions was that______.
A.
they could write them down
B.
they could agree on certain signs
C.
they could communicate with each other
D.
they could combine them
【简答题】正面图与平面图长要 、正面图与侧面图高要 、平面图与侧面图 宽要 。
【单选题】It is fair to say that the young are more susceptible to their companions.
A.
我们可以说年轻人更容易受同伴的怀疑。
B.
公平的说年轻人更容易受同伴的怀疑。
C.
我们可以说年轻人更容易受同伴的影响。
D.
公平的说年轻人更容易受同伴的影响。
【单选题】—Let's watch TV. —________. [ ]
A.
That's sound good
B.
That sounds well
C.
That's sounds well
D.
That sounds good
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