低压电工作业是指对（）V以下的电气设备进行安装、调试、运行操作等的作业。A、500B

Section B

Hi Colin,

Glad to hear that you are going to have so many adventures in Africa. To make your trip more enjoyable, you should take some necessary things with you. You’ll need strong boots because you are going to  53  a lot.  54  is also necessary in case the weather is bad on Mount Kilimanjaro. A towel is also needed because you will get  55  when you go white-water rafting.

56  very important, too. You must take your tent, sleeping bags and so on. Also take a map of all the places  57  you will visit and a  58  so you don’t get lost. You will take some food and you’ll probably find water. Take care  59 , as you will need to take your water purifying tablets and place them in a pan when you boil the water. And remember to take a pocket knife to cut food or anything else when  60 .

Best wishes,

Jennifer

53. A. run                  B. ride                 C. drive               D. walk

54. A. A parka               B.A raincoat            C. An umbrella         D. A life jacket

55. A. hot                         B. excited              C. wet                D. cold

56. A. An equipment is                              B. Equipments are  

C. Equipment is                              D. The equipments are

57. A. where               B. that                 C. when              D. in which

58. A. compass              B. watch                C. candle                D. box of matches

59. A. although             B. though                     C. however            D. yet

60. A. needed                      B. cut                        C. asked               D. required

假如你是一位民族资本家，你在解放前可能的经历是：

①甲午战争前后，民族资本主义发展的条件有所改善，创办一家棉纺织企业，发展情况比较好

②一战期间，发展势头强劲

③20世纪20年代，遇到很大困难，经营艰难

④南京国民政府成立后一度发展比较顺利

⑤抗战胜利后很长时间，经营条件明显好转 [ ]

A、①②③④⑤

B、②③④⑤

C、①②④⑤

D、①②③④

《建设部工程质量管理条例》中规定：违反本条例规定，施工单位在施工中偷工减料的，使用不合格的建筑材料、建筑构配件和设备的，或者有不按照工程设计图纸或者施工技术标准施工的其他行为的，责令改正，处工程合同价款( )的罚款。

A．4%以上6%以下

B．2%以上4%以下

C．6%以上8%以下

D．8%以E 10%以下

( )是指关系中的元组在组成主键的属性上不能有空值。

地下室应采用外围形成整体的防水做法，但当设计最高地下水位低于地下室底板（）m。

A．0.30～0.50

B．0.15～0.35

C．0.55～1.55

D．1.55～2.00