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【单选题】
下列各项中,关于芯柱的描述错误的是( )A.
芯柱是为满足抗震的需要而设置
B.
芯柱需要配置纵筋和箍筋
C.
芯柱是对既有柱的加强措施
D.
芯柱需要注明截面偏心情况
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反馈参考答案：
举一反三
【单选题】If points A and B are two locations on a country's production possibility frontier, then
A.
at any point in time, the country could produce both.
B.
both bundles must have the same relative cost.
C.
consumers are indifferent between the two bundles.
D.
the country could produce either of the two bundles.
【简答题】激光治疗雀斑的治疗终点为( )
【单选题】If points A and B are two locations on a country's production possibility frontier, then
A.
the country could produce either of the two bundles.
B.
at any point in time, the country could produce both.
C.
producers are indifferent between the two bundles.
D.
consumers are indifferent between the two bundles.
E.
both bundles must have the same relative cost.
【单选题】If points A and B are two locations on a country's production possibility frontier, then
A.
the country could produce either of the two bundles.
B.
consumers are indifferent between the two bundles.
C.
producers are indifferent between the two bundles.
D.
at any point in time, the country could produce both.
E.
both bundles must have the same relative cost.
F.
1
【简答题】下列哪些是有效的关键字 Miles , miles, a+b, if, apps, $4, Test, x, a, 4a, #44, a44
【多选题】Which two features are unique to SPA 525 phones compared to SPA 501， SPA 502， and SPA 508 phones？ （）
A.
monochrome backlit display
B.
full-duplex speakerphone
C.
MP3 music player
D.
dynamic softkeys
E.
Bluetooth
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