固定床的优点有()。A、设备简单、操作方便;B、对各种水质适应性强,出水水质较好;C

题型:多项选择题

问题:

固定床的优点有()。

A、设备简单、操作方便;

B、对各种水质适应性强,出水水质较好;

C、树脂用量小,利用率高;

D、再生和清洗时间短。

考点:化学工程分析化学概论分析化学概论题库
题型:多项选择题
某气态烃1mol能与2molHCl完全加成,加成后产物分子上的氢原子又可被6molCl2完全取代,则此气态烃可能是(   )

A.CH3-C≡C-CH3

B.CH2=CH2

C.CH≡C-CH3

D.CH2=CH-CH3

题型:多项选择题

14岁女孩,左小腿上端肿胀疼痛4个月,近1个月来肿胀增长较快,夜间疼痛明显。体检:左胫骨上端肿胀严重,压痛明显,浅静脉曲张,扪及一6cm× 8cm硬性肿块,固定,边界不清。X线示左胫骨上端呈虫蚀状溶骨性破坏,骨膜反应明显,可见Codmann三角。

请选择最合适的治疗方式

A.导管介入治疗

B.根治性截肢

C.化疗辅助后半关节移植

D.切除肿瘤后假体置入

E.放射治疗Tikhoff-Linberg肢体段截术

题型:多项选择题

Spring is just around the corner and it’s a time to get outside and enjoy the great outdoors. Here is a selection of festivals around the country that are a great excuse to travel and get back in the spring sunshine.

Dana Point Festival of the Whales

Dana Point, California

March 7 to 8 and 14 to 15, 2010

Each year, over two sunny weekends in March the town of Dana Point, California celebrates the return of migratory California gray whales to this part of the Pacific Ocean. Festivities include whale-watching, an arts festival and educational hands-on activities for the entire family. Prices start at $29 per adult and $19 for children. For more information, visit:

www.dpfestivalofwhales.com

Chandler Ostrich Festival

Chandler, Arizona

March 13 to 15, 2010

Chandler is the center of ostrich ranching (鸵鸟经营) in the USA. You can see jockeys ride these feathered beasts around the ostrich track at Tumbleweed Park. General admission is $9 for adults, $8 for seniors, $7 for children aged 5 to 12 and kids 4 and under are free. For more information, visit:

www.ostrichfestival.com

Festival of Houses and Gardens

Charleston, South Carolina

March 19 to April 18, 2010

The Historic Charleston Foundation gives curious travelers the opportunity to explore gardens of some of the finest private residences in America. Each 3-hour tour (afternoons from 2 to 5 pm and evenings from 6 to 9 pm) lets you visit 8 to 10 properties dating from the American colonial period. Prices range from $25 to $45. For more information, visit:

www.historiccharleston.org

Tulip Time Festival

Holland, Michigan

May 1 to 9, 2010

You don’t need to travel to the Netherlands this spring to see and smell some of the world’s finest tulips (郁金香). The annual Tulip Time Festival, one of the largest flower festivals in the country, will kick off with fireworks on May 1. Admission fee ranges from $6 for the children’s area to $38 for theatre tickets. Tickets and more information are available at:

www.tuliptime.com

60. A couple with their 4-year-old son will go whale-watching. They have to pay _____.

A. $58                         B. $38                        C. $48                   D. $77

61. The underlined word “jockeys” in the passage is closest in meaning to _____.

A. judges                     B. children                   C. riders                      D. beginners

62. A group of travelers who want to have fun in mid-April will go to _____.

A. Festival of Houses and Gardens                     B. Chandler Ostrich Festival

C. Dana Point Festival of the Whales                  D. Tulip Time Festival

63. Which of the following is TRUE of Tulip Time Festival?

A. It is held in a town in the Netherlands.

B. It will start with fireworks on the first day.

C. It is the largest flower festival in the world.

D. Admission is free for children.

题型:多项选择题

不协调性子宫收缩乏力,正确的处理应为()

A.人工破膜术

B.即刻剖宫产手术

C.静脉滴注催产素

D.第一产程中可使用肌注哌替啶

E.宫口开全准备助产前应再次给予哌替啶

题型:多项选择题

水平巷道支架前倾、后仰的偏差为多少?

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