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【单选题】
.α受体阻断剂的主要不良反应是A.
血糖过低
B.
支气管哮喘
C.
直立性低血压
D.
心力衰竭
E.
反跳现象
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反馈参考答案：
举一反三
【简答题】若某系统特性微分方程描述如下: ,则其频率特性为H(w)____________,则此数学模型描述方式称为_________________。
【单选题】The Yangtze River is______the Pearl River.
A.
three times long as
B.
three times as long as
C.
as three times longer as
D.
as long three times as
【单选题】The Yangtze River is almost ______ the Pearl River.
A.
two times as longer
B.
twice longer than
C.
as long as
D.
two time the length of
【单选题】The Yellow River is _____ the Pearl River.
A.
twice long as
B.
twice as long as
C.
as twice longer as
D.
as long twice as
【简答题】A—Certificate of Health B—Fire Insurance C—Industrial Accidents D—Insurance Company E—Insurance Policy F—Life Insurance G—Marine Insurance H—Natural Insurance I—Natural Losses J—Social Security Fund K...
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