反应3A(g)+B(g)═2C(g)在三种不同的条件下进行反应,在同一时间内,测

题型:选择题

问题:

反应3A(g)+B(g)═2C(g)在三种不同的条件下进行反应,在同一时间内,测得的反应速率用不同的物质表示为:①vA═1mol/L•min ②vC═0.5mol/L•min ③vB═0.5mol/L•min,三种情况下该反应速率大小的关系正确的是(  )

A.③>①>②

B.③>②>①

C.①>②>③

D.②>①>③

考点:化学反应速率的计算
题型:选择题

微粒子化学发光免疫分析(MLIA)中,作用于发生底物三氧乙烷的标记物是()

A.HRP

B.ALP

C.PR3

D.三联吡啶钌

E.AMPPD

题型:选择题

Do you know that it is your own immune system working against the virus that makes you uncomfortable when getting a cold, but not the virus itself? So when you have got a strong immune system and the virus is strong enough too, you will possibly get terrible cold symptoms( 症状) ?

Vitamin C won't stop a cold

It is claimed that Vitamin C helps by increasing white blood cells. However, many tests have shown that it does not prevent colds. At best, it only slightly reduces the rime of symptoms.

Staying indoors won't protect you

One of the most likely sources of cold viruses is your computer mouse or desk. A study of the cold virus in offices found that 47% of desktops, 46% of computer mice and 45% of telephones had cold viruses on them.

Wrapping up warm won't protect you

Colds are more common in autumn and winter. That's because the cool, wet and cold weather drives people indoors, where viruses may more easily jump from one person to another. And the distinct peak in colds(感冒高峰) is in September and early January, which is likely due to the return of students to schools and colleges after the summer and winter vacation.

Old granny's chicken soup is right

Granny's chicken soup is an old cure for colds since a long time ago. Scientists say it is true. Chicken soup does help cure a cold. Many canned soups are just efficient as homemade ones.

小题1: It is ______ that makes you uncomfortable when getting a cold.

A.the virus itself

B.Vitamin C

C.the terrible cold symptom

D.your own immune system小题2: "Staying indoors won't protect you" tells us that ______ indoors.

A.there are many desks

B.there are many telephones

C.there are many cold viruses

D.there are many computer mice小题3:The distinct peak in colds is in September and early January. That's because______.

A.it's in autumn and winter

B.the weather is cool, wet and cold

C.students return to schools and colleges

D.viruses can jump from one person to another more easily小题4:Many canned soups are just efficient as homemade ones. The underlined word "efficient" means _____ in Chinese.

A. 有效的     B. 美味的     c. 值钱的     D. 方便的

题型:选择题

HTML语言中,可使用()标签将脚本插入HTML文档。

A.

B.<script>

C.

D.

题型:选择题

震惊中外的“五卅”反帝爱国运动爆发的导火线是()被枪杀。

A.顾正红

B.茅丽瑛

C.徐阿梅

D.邓中夏

题型:选择题

根据《药品经营质量管理规范》,下列药品批发企业出库管理的叙述,错误的是

A.药品出库应遵循“先产先出”、“近期先出”和按批号发货的原则

B.药品出库应进行复核和质量检查

C.一类精神药品和二类精神药品应建立双人核对制度

D.药品出库应做好药品质量跟踪记录,以保证能快速、准确地进行质量跟踪

E.质量跟踪记录应保存至超过药品有效期一年,但不得少于三年

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