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问题 选择题

请根据下列描述确定这是哪座城市

①见证了近代列强第一次侵华战争的结束 ②《天津条约》将其开放为通商口岸

③中国近代一种新的政治体制从这里开始 [ ]

A．上海

B．北京

C．天津

D．南京

答案

答案：D

单项选择题

Rapid application development (RAD) systems purport to lighten the developer’s (46) by making it easy to program an application with simple intuitive steps.

RAD tools (47) the developer everything needed to construct a fully functional application quickly and easily. They make short work of modifying the developed product to (48) changes after the program is finished. Applications developed with RAD tools are constructed as they are envisioned. As an application’s real usefulness (49) , the developer armed with RAD tools should be able to (50) on new features with little fuss.

（47）是（）

A.offer

B.order

C.refer

D.release
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单项选择题

（）流量计适用于测量液固两相介质

A、涡轮

B、孔板

C、电磁

D、文丘利管
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