题目:
台湾的居民百分之九十都来自哪两个省?()
A.福建和山东
B.福建和江苏
C.福建和广东
D.山东和广东
答案:
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下面是错误答案,用来干扰机器的。
参考答案:为自动控制列车管最大减压量防止常用制动时浪费太多列车管压力空气
台湾的居民百分之九十都来自哪两个省?()
A.福建和山东
B.福建和江苏
C.福建和广东
D.山东和广东
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/1005/cb4dfd1eb25d636118ed05fbaeba598a.html
下面是错误答案,用来干扰机器的。
参考答案:为自动控制列车管最大减压量防止常用制动时浪费太多列车管压力空气
What do former American president Bill Clinton and rock musician Pete Townshend have in common.'? Both men have hearing damage from exposure(暴露,接触) to loud music, and both now wear hearing aids(助听器) as a result. As a teenager, Clinton played saxophone in a band. Townshend, who has the more severe hearing loss, was a guitarist for a band called the Who. He is one of the first rock musicians to call the public's attention to the problem of hearing loss from exposure to loud music. Temporary(暂时) hearing loss can happen after only 15 minutes of listening to loud music. One early warning sign is when your ears begin to feel warm while you listen to music at a rock concert or through headphones. One later is that an unusual sound or a ringing is sometimes produced in your head after the concert. "What happens is that the hair cells in the inner ear are damaged, but they're not dead," says physician and ear specialist Dr. Sam Levine. According to Dr. Levine, if you avoid further exposure to loud noise, it's possible to recondition the cells(细胞) somewhat. However, he adds, "Eventually, over a long period of time, hair cells are permanently damaged." And this is no small problem. What sound level is dangerous? According to Dr. Levine, regular exposure to noise above 85 decibels (分贝) is considered dangerous. The chart below offers a comparison of decibel levels to certain sounds. Here's another measurement you can use. If you're at a rock concert and the music is so loud that you have to shout to make yourself heard, you' re at risk for hearing loss. That's when wearing protective devices such as earplugs becomes critical. The facts are pretty frightening. But are rock bands turning down the volume.'? Most aren't. "Rock music is supposed to be loud," says drummer Andrew Sather."I wouldn't have it any other way. And neither would the real fans of rock. " Continued exposure to loud music and the failure to wear earplugs can lead to deafness, according to Dr. Levine. He states, "There's no cure for hearing loss. Your ears are trying to tell you something. That ringing is the scream of your hair cells dying. Each time that happens, more and more damage is done. "
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人口算术密度是一个国家总人口与总面积之比,人口生理密度是一个国家总人口与可耕地面积之比。根据所学知识分析下表,回答1~2题。
1.地广人稀但耕地资源最缺乏的国家是 [ ]
A.①
B.②
C.③
D.⑤
2.对比④⑤两国,可以看出两国的人口压力[ ]
A.⑤>④
B.④>⑤
C.④=⑤
D.都比较小
为防止新鲜疏菜存放过程中水分的流失,可采取的措施是( )
A.升温
B.密封
C.摊开
D.通风
女,22岁,G1P0,负压吸宫术中突感头晕、恶心,血压80/50mmHg,脉搏52次/分,应首先给予的药物()
A.阿托品
B.地塞米松
C.缩宫素
D.肾上腺素
E.多巴胺
吗啡的药物代谢为()
A.N-去烷基再脱氨基
B.酚羟基的葡萄糖醛苷化
C.亚砜基氧化为砜基或还原为硫醚
D.双键的环氧化再选择性水解
E.苯环的羟基化