三屏智真系统设备不包括以下哪一项?()A.三眼摄像机 B.继电器 C.无线路由 D.

题型:单项选择题

问题:

三屏智真系统设备不包括以下哪一项?()

A.三眼摄像机

B.继电器

C.无线路由

D.时序电源

考点:华为认证考试华为认证网络工程师HCNA考试华为认证网络工程师HCNA考试题库
题型:单项选择题

关于药物的基本作用和药理效应特点,正确的是()

A.具有选择性

B.使机体产生新的功能

C.具有治疗作用和不良反应两重性

D.药理效应有兴奋和抑制两种基本类型

E.通过影响机体固有的生理、生化功能而发挥作用

题型:单项选择题

I came across with an old man in rags the other day, he was begging for a living. To be frank, I didn’t know how I ought to give him some money. On the one hand, I am not born in a rich family. On the other hand, old as the man was, he was in  good health. In most people’s opinion, he should be able to earn her living instead of be a beggar. All of us ought to help those who is really in need. However, what matters is that all the people should try to depend in themselves first. Therefore our society can be much harmonious, which is we all look forward to.

题型:单项选择题

手机网站制作、传播淫秽色情等有害信息活动猖獗,屡禁不止的根本原因是 [ ]

A、职能部门监管不力

B、精神文明建设不够深入

C、市场经济的自发性

D、青少年思想觉悟比较低

题型:单项选择题

下列除杂选用的试剂和方法不完全正确的是[ ]

 
被提纯物质
杂质 
试剂
方法
A.
C2H6
C2H4
 溴水
洗气
B.
C2H4   
SO2
KMnO4溶液
洗气
C.
乙酸乙酯
 乙酸 
饱和Na2CO3溶液 
分液
D.
乙醇
水 
CaO
蒸馏
题型:单项选择题

必需基团

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