H2受体拮抗剂的作用强而持久且副作用少的是（）。 A.法莫替丁 B.雷尼替丁 C.罗

恶性高血压导致患者死于尿毒症的主要原因是：

A．肾细动脉纤维素样坏死

B．肾小管坏死

C．肾间质出血

D．肾小动脉增生性动脉炎

E．肾小球纤维化

施工成本分析就是对成本形成过程和影响成本升降的因素进行分析，以寻求进一步降低成本的途径，进行成本分析需要的第一手资料有（）。

A.统计核算资料

B.账簿资料

C.业务核算资料

D.报表资料

E.会计核算资料

箭竹围挡的搭接长度不得小于（）。

第三节：完形填空（共20小题；每小题1．5分，满分30分）

It is well that young men should begin at the beginning and occupy the least important positions．21 of the leading businessmen of Pittsburgh had a serious responsibility placed upon them at the very  22  of their career．They were  23 to the broom(扫帚), spending the first hours of their business lives   24 the office．

And here is the basic  25 of success, the great secret:  26  your energy, thought, and capital (资本) wholly on the business in which you are  27 ．Having begun in one line, determine to fight it out on that  28 , to lead in it, adopt every  29  , have the best machinery, and know the most about it．

The companies which fail are those which have 30 their capital, which means that they have scattered their brains  31  ．They have investments in this, or that, or  32 , here, there, and everywhere．“Don't put all your eggs in one basket” is all  33 , I tell you．“Put all your eggs in one basket, and then  34  that basket”．Look round you and take  35 ; men who do that do not often fail．It is easy to watch and carry the one basket．It is trying to carry too many baskets  36 breaks most eggs in this country．He who  37  three baskets must put one on his  38  , which is likely to fall down．One  39 of the American businessman is lack of concentration．

Remember: put all your eggs in one basket, and watch that basket． 40 Emerson says, "no one can cheat you out of final success but yourselves．"

21．A．None         B．Few              C．All          D．Many

22．A．beginning      B．end           C．point           D．promotion

23．A．ordered       B．promoted           C．introduced            D．stated

24．A．sweeping out   B．taking out      C．bringing out       D．picking out

25．A．inspiration     B．condition            C．plan              D．case

26．A．concentrate    B．devote             C．apply       D．bury

27．A．charged        B．engaged            C．prepared     D．done

28．A．position      B．career           C．row          D．line

29．A．improvement   B．chance           C．learning     D．rise

30．A．gathered     B．forbidden          C．got          D．scattered

31．A．also          B．either           C．neither        D．yet

32．A．one            B．the other         C．others       D．the others

33．A．apparent      B．clear            C．wrong       D．perfect

34．A．notice       B．observe            C．stare         D．watch

35．A．notice        B．comment         C．interest       D．concentration

36．A．what          B．that               C．whoever      D．whichever

37．A．brings         B．takes              C．carries       D．owns

38．A．mind         B．brain              C．head         D．hand

39．A．fault          B．advantage          C．pattern       D．model

40．A．When         B．While               C．Which       D．As

对厂用电接线有哪些基本要求？