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【单选题】
关于消化性溃疡下述哪些情况为手术适应证:A.
上消化道出血
B.
反复发作的十二指肠球溃疡
C.
胃溃疡疑癌变
D.
并不全幽门梗阻
E.
复合溃疡
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皮皮学刷刷变学霸
举一反三
【简答题】对于超高、超长的物体,如高耸入云的电视发射塔、幽深的山谷等纵线条景物适合使用哪种镜头拍摄( )。 A .推镜头 B.拉镜头 C.摇镜头 D.固定镜头
【简答题】线性表的顺序存储结构是通过______________________直接反应数据元素之间的逻辑关系,而链式存储结构则是通过___________间接反映数据元素之间的逻辑关系。
【单选题】Total welfare gains from trade to the economy can be measured:
A.
as the sum of consumer and producer surpluses.
B.
as the difference between producer surplus and consumer surplus.
C.
as the sum of consumer and producer surpluses minus taxes
D.
as the net gain in consumer surplus that results from an action that alters a market equilibrium.
【单选题】All the following are included in the price of ￡ 299 EXCEPT______.
A.
transport between the airport and the hotel
B.
telephone calls made by tourists
C.
the services of guides to tourists
D.
double rooms for every two tourists
【简答题】我们日常所见的白光是波长为（）的可见光。
【判断题】While trade restrictions do provide gains to certain segments in the economy, such restrictions will always lower national welfare.
A.
正确
B.
错误
【简答题】线性表的顺序存储是通过_________来反映数据元素之间的逻辑关系，而链式存储结构是通过__________反映数据元素之间的逻辑关系。
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