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【单选题】
平时经常威胁到我们皮肤健康呼吸的空气有汽车尾气、吸烟形成的烟雾以及( )。
A.
沼气
B.
二氧化碳
C.
厨房油烟
D.
天然气
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参考答案:
举一反三
【判断题】智能深松作业管理系统利用姿态传感器,提高精度,自动识别作业种类。
A.
正确
B.
错误
【单选题】听力原文: The three American officials arrived at an airport to the west of Baghdad on the special UN flight from Bahrain. According to diplomats, they were promptly and politely asked by the Iraqis to tu...
A.
were allowed to work unimpeded.
B.
were forbidden to work at all.
C.
were asked to leave.
D.
were promptly detained.
【单选题】Federal officials should consider reopening public access to about three dozen Web sites withdrawn from the Internet after the Sept. 11, 2001, attacks, a government-financed study says, because the si...
A.
36
B.
24
C.
48
D.
18
【单选题】神经细胞的静息电位负值(绝对值)加大时,其兴奋性:
A.
不变
B.
减小
C.
增大
D.
先 减少 后增大
E.
先增大后减少
【单选题】神经细胞的静息电位负值(绝对值)加大时,其兴奋性
A.
不变
B.
减小
C.
增大
D.
先减小后增大
E.
先增大后减小
【单选题】Thailand confirmed three new human bird flu cases Thursday as health officials warned it could take two years to conquer Asia's outbreak. Meanwhile, the World Health Organization said the latest tests...
A.
It could take two years to conquer Asia's outbreak of bird flu.
B.
The bird flu is dangerous because it is very easy to spread between people.
C.
The best way to control the spread of the bird flu is by killing the infected birds.
D.
The outbreak of bird flu is hard to control because the genes of the bird flu strain and human flu are mixing very quickly.
【单选题】外盘大于内盘,通常股价会▁▁▁▁。
A.
上涨
B.
下跌
C.
盘整
D.
无法判断
【判断题】佛教是世界各大宗教中创立时间最早的。
A.
正确
B.
错误
【单选题】听力原文: NASA officials say, on Wednesday, one of three sensors (传感器) on Columbia's left-hand landing gear possibly indicated the device had begun to deploy (展开;配置) 30 seconds before all contact was lost...
A.
on Jan. 3rd
B.
on Feb. 1st
C.
on Mar. 4th
D.
on Jan. 2nd
【判断题】智能深松作业管理系统利用姿态传感器,提高精度,自动识别作业种类。
A.
正确
B.
错误
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