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【单选题】
受水浸泡或处于潮湿环境中的重要建筑物所选用的材料,其软化系数应( )[1分]
A.
>0.5
B.
>0.75
C.
>0.85
D.
<1< /div>
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皮皮学刷刷变学霸
举一反三
【单选题】β 1 受体分布于
A.
虹膜辐射肌
B.
血管平滑肌
C.
支气管平滑肌
D.
心肌
E.
骨骼肌
【单选题】β1受体分布于:
A.
虹膜辐射肌
B.
血管平滑肌
C.
支气管平滑肌
D.
心脏
【多选题】β1受体可分布于
A.
心脏
B.
肾小球旁系细胞
C.
支气管平滑肌
D.
骨骼肌血管
E.
冠脉
F.
肝脏
G.
突触前膜
【单选题】The Tobacco ColoniesSixteenth-century England was a tumultuousplace. Because they could make more money from selling wool than from selling food, many of the nation’s landowners were converting farmer...
A.
During the 16th century, people were thinking highly of business.
B.
The food shortage of 16-century England was caused by converting to the sheep husbandry.
C.
In 1606, King James I gave the southern half to the Plymouth Company.
D.
Virginia was the first colony to receive slaves from Africa.
【简答题】非谓语动词专练 1.______ more attention,the trees could have grown better. A.To give B.Having given C.Given D.Giving 2.The first textbooks ______ for teaching English as a foreign lan...
【单选题】The first textbooks _______ for teaching English as a foreign language came out in the 16th century.
A.
Having written
B.
to be written
C.
being written
D.
written
【多选题】分布于突触前膜的受体有(    )
A.
β 1 受体    
B.
β 2 受体
C.
β 3 受体    
D.
α 1 受体
E.
α 2 受体
【单选题】The Tobacco ColoniesSixteenth-century England was atumultuousplace. Because they could make more money from selling wool than from selling food, many of the nation’s landowners were converting farmers...
A.
seeking gold
B.
growing tobacco
C.
feeding themselves
D.
none of them
【单选题】β 1 受体分布于 :
A.
虹膜辐射肌
B.
血管平滑肌
C.
支气管平滑肌
D.
心肌
【简答题】3) The Mayan cities were entirely empty in the 16 th century.
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