压力表类型的选择依据:一是工艺生产要求,二是被测介质性质,三是()。A、现场环境条件

题型:单项选择题

问题:

压力表类型的选择依据:一是工艺生产要求,二是被测介质性质,三是()。

A、现场环境条件

B、生产设备类型

C、工艺控制指标

D、自动控制类型

考点:仪表工考试仪表维修工初级仪表维修工初级题库
题型:单项选择题
已知椭圆C1的中心在坐标原点,焦点在坐标轴上.
(1)若椭圆C1过点(
2
,0)和(0,2),求椭圆C1的标准方程;
(2)试判断命题“若椭圆C2:x2+y2=1(在椭圆C1内)任意一条切线都与椭圆C1交于两点,且这两点总与坐标原点构成直角三角形,则满足条件的椭圆C1恒过定点”的真假.若命题为真命题,求出定点坐标,若为假命题,说明理由.
题型:单项选择题

.

第三部分:阅读理解(共两节,40分)

第一节:(共15小题;每小题2分,共30分)

阅读下列短文,从每题所给的A、B、C、D四个选项中,选出最佳选项。

Experience the Colorado River the Hualapai Way!

River Runners offers the ONLY One Day Whitewater trip ANYWHERE at the

GRAND CANYON!

Since 1973, Hualapai River Runners has been conducting whitewater rafting (漂流) journeys on the Colorado River. Our experienced guides expertly sail along the river and share the history of the Canyon and the Hualapai people with you.

Visitors experience the excitement of whitewater rapids and then stop to enjoy the impressive beauty of Travertine Falls and a tasty lunch. No charge for children 2 years and under.

One-Day Trip

Retail $249.00 + $79.00 (helicopter and round-trip ground transportation)

Whitewater rafting tours begin in Peach Springs. Hualapai River Runners transports you to Diamond Creek, which is the starting point for the 37 mile rafting tour. Lunch is included and upon arrival at the rafting tour termination point, fly out of the Grand Canyon by helicopter to Grand Canyon West.

Two-Day Trip

Retail $549.00 + $79.00 (helicopter and round-trip ground transportation)

Two-day rafting trips with one night on the Colorado River. All supplies and meals are included. Two days in the Grand Canyon, on the Colorado River, allows more time to explore one of the Seven Wonders of the World.

Tours Include:

·Round-trip transportation from Peach Springs to the starting point and from the termination point back to Peach Springs.

·Snack, drinks and lunch (vegetarian meals available upon request)

·Waterproof dry bags for storing your cameras, sunscreen, dry clothes, etc.

The helicopter part of transportation is weather permitting. If the helicopter transportation is cancelled because of bad weather, the raft will continue an additional two hours to South Cove and a maximum $20.00 per customer will be given back.

Special Website booking rate 15% off rafting in April 2010. So book now!

Call us Toll Free Today!Tel: 1-888-868-9378

56. Where do whitewater rafting tours start?

A. Travertine Falls.                        B. Peach Springs.

C. Diamond Creek.                        D. Grand Canyon West.

57. We learn from the passage that ________________________.

A. Hualapai River Runners provides dry clothes

B. you will get $20 back if you are dissatisfied

C. the trip is free of charge for children under 2

D. online booking has a better offer all year round

58. What is the purpose of the passage?

A. To attract people to the sights.

B. To explore the Hualapai culture.

C. To explain how to make a rafting trip.

D. To introduce the history of the Colorado River.

题型:单项选择题

有关乳腺的淋巴引流途径,下列不正确的是()

A.锁骨下淋巴结是最主要的引流区域

B.两侧 * * 间皮下有交通淋巴管

C. * * 的深部淋巴网可引流到肝

D.胸大、小肌之间有引流的淋巴结

E.两侧胸骨旁淋巴结之间没有直接的淋巴交通

题型:单项选择题

弹性较小的理财目标有( )。

A.子女教育

B.房产投资

C.未来购车

D.父母赡养

E.出国旅游

题型:单项选择题

下列()属于房地产投资的特点。

A.风险效应

B.变现性相对较好

C.财务杠杆效应

D.投资长期性

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