某商店运进80本练习本,进货价共计40元.要想每本练习本盈利0.2元,每本练习本

题型:选择题

问题:

某商店运进80本练习本,进货价共计40元.要想每本练习本盈利0.2元,每本练习本的零售价应定为(  )元.
A.40.2B.2.2C.0.70
考点:整数,小数,分数,百分数和比例的复合应用题
题型:选择题

营养学研究发现,从深海鱼油提取的DHA是一种不饱和高级脂肪酸(假设DHA的化学式为CxHyOz),同温同压条件下,测得DHA蒸汽的质量是同体积H2质量的192倍;将3.84g的DHA完全燃烧,并使产生的产物全部依次通过下图装置,得到下表所列的实验结果(假设产生的气体产物完全被吸收)。

求:(写出计算过程)

(1)根据上表数据确定DHA的摩尔质量;

(2)该有机物的分子式。

题型:选择题

水电工程验收委员会成员提出的涉及重大问题的保留意见列入备忘录,( )。

A.作为验收鉴定书(报告)的附件

B.作为验收鉴定书(报告)的内容

C.作为个人意见,不保留

D.写入遗留问题相应栏

题型:选择题

“售出商品概不退换”,侵害了消费者的( )。

A.求偿权

B.自主选择权

C.公平交易权

D.监督权

题型:选择题

依据《建设工程安全生产管理条例》的规定,采用新结构、新材料、新工艺的建设工程以及特殊结构的工程,( )单位应当提出保障施工作业人员安全和预防生产安全事故的措施建议。

A.设计

B.施工

C.监理

D.建设

题型:选择题

(41)Orientation
Yellowstone is much more than hot ground and gushing steam. Located astride the Continental Divide, most of the park occupies a high plateau surrounded by mountains and drained by several rivers. Park boundaries enclose craggy peaks, alpine lakes, deep canyons, and vast forests. In 1872, Yellowstone became the world’s first national park, the result of great foresight on the part of many people about our eventual need for the solace and beauty of wild places.
(42) When to Go
More than half of the 3 million annum visitors come in July and August. In September and early October, the weather is good, the visitors few, and the wildlife abundant. In May and June, you can see newborn animals, but the weather may be cold, wet, and even snowy. Between about No-vember 1 and May 1 most park roads are closed to vehicles.
(43) Getting There
(44) How to Visit
The 142-mile (228.5-kilometer) Grand Loop Road forms a figure eight, with connecting spurs to the five entrances. On any visit, start with the geyser basins and Mammoth Hot Springs to see wildlife and thermal features (caution: both can be hazardous if approached too closely). On the second day, travel to the Grand Canyon of the Yellowstone, Hayden Valley, and Yellowstone Lake.
(45) Park Information
Park opens year-round.
[A] Road from North Entrance to Northeast Entrance open all year; most other park roads closed to cars November through April. Call headquarters for latest weather and road conditions.
[B] Facilities for Disabled Visitor centers, Madison and Fishing Bridge Campgrounds, most rest rooms, amphitheaters, numerous ranger-led activities, walks, and exhibits are wheelchair accessible. Free brochure available.
[C] On a longer stay, visit the Northern Range, or consider a boating or fishing trip on Yellowstone Lake; a backcountry excursion on foot or horse; or any of the numerous easy nature trails throughout the park.
[D] In early years, what made Yellowstone stand out was the extravaganza of geysers and hot springs. The wild landscape and the bison, elk, and bears were nice but, after all, America was still a pioneer country filled with scenic beauty and animals.
[E] By Plane
West Yellowstone Airport (WYS) at the West Entrance of Yellowstone. (This airport is open June through September.)
Cody Airport (COD) about 50 miles (81 kilometers) from the park.
[F] During the winter season, mid-December to mid-March, Yellowstone becomes a fantasy of steam and ice; facilities are limited but sufficient. Only the road between the North and Northeast Entrances stays open to cars, but snowmobiling is permitted on unplowed roads. Heated snow coaches offer tours and give cross-country skiers access to the 50 miles (80.5 kilometers ) of groomed trails.

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