空调冷凝水系统设计中应注意哪些问题?

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问题:

空调冷凝水系统设计中应注意哪些问题?

考点:暖通空调暖通空调题库
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5岁男孩,右肱骨髁上骨折屈肘位石膏托固定术后2天,出现手背严重肿胀水疱,手指不能主动活动,被动牵拉手指时剧痛。

体检重点应是()

A.血压

B.皮肤色泽

C.皮肤有无破溃

D.手指皮肤感觉

E.桡动脉有无搏动

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假设探月宇航员站在月球表面一斜坡上的M点,并沿水平方向以初速度v0抛出一个质量为m的小球,测得小球经时间t落到斜坡上另一点N,斜面的倾角为α,已知月球半径为R,月球的质量分布均匀,万有引力常量为G,求:

(1)月球表面的重力加速度g′;

(2)人造卫星绕月球做匀速圆周运动的最大速度.

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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

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下列实验室保存试剂和处理事故的方法,有错误的是(   )

A.碘升华形成的污迹用酒精清洗

B.液溴不慎落在皮肤上,可用稀氨水、酒精等液体洗涤

C.浓盐酸保存在无色密封的玻璃细口瓶中

D.碘保存在盛有水的棕色瓶中

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硫铵加热器温度不足时,也可以加一次蒸气。

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