720×5，积的末尾有______个0．

某计算机系统由下图所示的部件构成，假定每个部件的千小时可靠度都为R，则该系统的千小时可靠度为______。
[*]

A．R+2R/4
B．R+R²/4
C．R(1-(1-R)²)
D．R(1-(1-R)²)²

颅内压增高患者出现便秘时，不正确的处理方法是（）

A.使用开塞露

B.腹部按摩

C.使用缓泻剂

D.用肥皂水灌肠

E.鼓励患者多食蔬菜水果

解释测验分数时，可以不考虑的因素是：()

A、被试者的遗传特征

B、测试前的学习、经验和历史事件

C、测验的情境

D、测验后的重大生活事件

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!

9（）

简述《销售合同公约》对减低价金和计算损害赔偿额作出了如何规定？