下列物质反应时，实验现象的描述与实事相符的是（） A．水通电正负极分别产生氧气

发布时间：2017-06-07 19:15 │ 来源：www.tikuol.com

题型：选择题

问题：

下列物质反应时，实验现象的描述与实事相符的是（　　）

A．水通电正负极分别产生氧气、氢气

B．木炭在空气中燃烧放出白烟

C．铁丝在空气中燃烧火星四射生成黑色固体

D．白磷在氧气中燃烧，产生大量的白烟

考点：S，Fe，C，P等物质在氧气中的燃烧电解水实验

题型：选择题

阅读下列内容，从每小题所给的四个选项中选出一个最佳答案。

Here is an advertisement about two-day tour between Hong Kong and Macao.

                                  Two-day tour between Hong Kong and Macao
Date: July 15 th ～16 th
Travel: Sightseeing bus in the city and the ship/boat/speedboat (快艇) between Hong Kong and Macao
Places to visit:
            Hong Kong: Ocean Park and Victoria Peak
            Macao: Mazu Temple, the Ruins of St. Paul
Cost: HK ＄600, including travel, three-star hotel, meals and admission tickets. 40% off for students or
          children under 1.4 m in height.
          For more information, call 852 3881 3502 or 852 3882 3503.

Bill is a student in Beijing Sunshine Secondary school. Last week he joined the two-day tour between
Hong Kong and Macao with his parents.

1. Bill enjoyed the beautiful views(风景) in the city by _____ last week.

A. ship
B. boat
C. bus
D. speedboat

2. In Hong Kong you can visit _____.

A. Victoria Peak
B. Mazu Temple
C. the Ruins of St. Paul
D. Moon lake

3. The tour cost Bill's family _____.

A. HK ＄1,800
B. HK ＄1,560
C. HK ＄1,320
D. HK ＄1,080

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题型：选择题

根据轮系中各齿轮的轴线在空间的位置是否固定，将基本轮系分为定轴轮系和（）。

A.差动轮系

B.行星轮系

C.周转轮系

D.变速轮系

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题型：选择题

男性，37岁。呼吸困难。查体见脉搏在吸气时消失。这种脉搏是（）

A.交替脉

B.无脉

C.迟脉

D.奇脉

E.水冲脉

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题型：选择题

女性，42岁。突然上腹痛1天，渐重，恶心，呕吐，来诊后急查血尿淀粉酶，均明显高于正常，该患者最可能的病因为（）.

A.胆道结石

B.急性胰腺炎

C.病毒感染

D.胺类药物

E.遗传或代谢障碍

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题型：选择题

用来存储当前正在运行的应用程序的存储器是______。

A．内存
B．硬盘
C．软盘
D．CD-ROM

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