除合伙协议另有约定外，有限合伙企业的合伙人均不得自营或者同他人合作经营与本合伙企业相

火箭发射、同步卫星发射都选在晚间7～9点，这样做的原因可能是（）。

A.晚间天气条件好，风速低，有利于火箭发射

B.晚间气温低，有利于卫星保养和火箭的散热

C.当卫星到达同步定位点时，卫星自身的太阳能电池正好对准太阳，能保证太阳能向卫星持续供电

D.选在晚间发射隐蔽性强，不易被其他国家卫星或飞机侦察到

用于滑板车、沙滩车、卡丁车等小全地形车的轮胎属于消费税征税范围。（）

完形填空（共10小题；每小题1分，满分10分）

阅读下面短文，掌握其大意，然后从第30至第40小题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。

Going to a Britain school for one year was a very enjoyable and exciting experience for me. I was very happy with the school hours in Britain  31  school starts around 9 a.m. and ends about 3.30 p.m. This means I could get up an hour  32  than usual as schools in China begin before 8 a.m.

On the first day, all students went to  33  assembly. I sat next to a girl whose name was Diane. We  34  became best friends. During  35 , the headmaster told us about the rules of the school. He also told us that the best way to  36  respect from the school was to work hard and  37  high grades. This sounded like my school in China.

My English improved a lot as I used English every day. I usually went to the Computer Club at lunch time, so I  38  e-mail my family and friends back home  39  free. I also had an extra French class on Tuesday evenings.  40  was really fun as I learned how to buy, prepare and cook food. 

31. A. because    B. if           C. so                D. though

32. A. earlier     B. late         C. early              D. later

33. A. join          B. hold       C. attend           D. make

34. A. just          B. now        C. soon             D. fast

35. A. assembly   B. class      C. meal             D. break

36. A. take                B. earn        C. find              D. creat

37. A. realise      B. achieve   C. improve        D. develop

38. A. must        B. should    C. needed                 D. could

39. A. for           B. in           C. on                D. with

40. A. Eating      B. Cooking   C. Learning       D. playing

下列各项中哪项最能代表产程进展情况（）。

A.胎心率

B.宫颈口扩张与胎头下降

C.子宫收缩的强度与频率

D.是否破膜

E.胎位

燃气轮机（）是指在单位时间内、单位体积的燃烧空间中能释放出来的热量。