受激拉曼散射产生的原因是（）与石英玻璃光纤中的（）的相互作用而引起的非线性现象。

为了利用单摆较准确地测出重力加速度，可选用的器材为_____________、_____________、_____________、_____________、_____________。（填字母序号）

A、20cm长的结实的细线；

B、100cm长的结实的细线；

C、小木球；

D、小钢球；

E、秒表；

F、大挂钟；

G、米尺；

H、50cm量程的刻度尺；

I、铁架台。

供给曲线所在坐标系的横纵坐标分别是( )。

A．供给量和商品价格

B．时间和供给量

C．供给量和时间

D．商品价格和供给量

（26）与《中华人民共和国政府采购法》的有关内容一致。

A．政府采购是指各级国家机关、事业单位和团体组织，使用贷款、财政性资金或自筹资金采购依法制定的集中采购目录以内的或者采购限额标准以上的货物、工程和服务的行为

B．货物是指各种形态和种类的物品，包括原材料、燃料、设备、产品等。工程是指建设工程，包括建筑物和构筑物的新建、改建、扩建、装修、拆除、修缮等

C．在技术咨询合同、技术服务合同履行过程中，受托人利用委托人提供的技术资料和工作条件完成的新的技术成果，属于受托人。委托人利用受托人的工作成果完成的新的技术成果，属于委托人。当事人另有约定的，按照其约定

D．中标人按照合同约定或者经招标人同意，可以将中标项目的部分非主体、非关键性工作分包给他人完成

British people are far more sophisticated about beverages than they were 50 years ago. Witness the Starbucks revolution and you’ll know where (1) goes. However, spurred on by recent studies suggesting that it can cut the risk of (2) and retard the aging process, tea is enjoying a (3) .

Although tea is available in more places than ever, it remains to be (4) of a typical British family.

If you are invited to an English home, (5) in the morning you get a cup of tea. It is either brought in by a heartily (6) or an almost malevolently silent maid. When you are (7) in your sweetest morning sleep you must not say: "Go away, you (8) ." On the contrary, you have to declare with your best five o’clock smile. "Thank you very much. I (9) a cup of tea, especially in the morning." If they leave you alone with the liquid you may pour it (10) !

Then you have (11) ; then you have tea at 11 o’clock in the morning; (12) ; then you have tea for tea; then after supper; and again at eleven o’clock (13) .

You must not refuse any additional cups of tea under the(14) if it is hot; if it is cold; if you are (15) ; if you are nervous; if you are watching TV; (16) ; if you have just returned home; if you feel like it; if you do not feel like it; if you have had no tea (17) ; if you have just had a cup.

You definitely must not (18) . I sleep at five o’clock in the morning; I have coffee for breakfast; I drink innumerable (19) during the day; I have the (20) even at tea-time!

13（）

下列输血适应证中哪一项是错误的

A．急性大出血时补充血容量

B．重症感染时输入抗体补体

C．凝血异常时补充各种凝血因子

D．纠正贫血或低蛋白血症

E．增加营养，供应能量