诗句“不敢高声语,恐惊天上人”中的“高”是指声音的 大;发出较强声音的喇叭能使它

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问题:

诗句“不敢高声语,恐惊天上人”中的“高”是指声音的         大;发出较强声音的喇叭能使它前面的烛焰“跳舞”,说明声波具有            ;听不同乐器弹奏同一首歌曲时能分辨出所用乐器,是利用了声音的           不同.

考点:响度的概念音色的概念声与能量
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已知关于x、y的一次函数y=(m-l)x-2的图象经过平面直角坐标系中的第一、三、四象限,那么m的取值范围是( )

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下列选项中,主要用于片剂的黏合剂是

A.羧甲基淀粉钠

B.羧甲基纤维素钠

C.干淀粉

D.低取代羟丙基纤维素

E.交联聚维酮

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BSP方法指出,信息系统应该向整个企业提供一致的信息,而信息的不一致,则多源于()的开发系统。

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Many years ago, when I was fresh out of school and working in Denver, I was driving to my parents’ home in Missouri for Christmas. I stopped at a gas station(加油站) about 50 miles from Oklahoma City, where I was planning to stop and visit a friend. While I was standing inline at the cash register, I said hello to an older couple who were also paying for gas.

I took off, but had gone only a few miles when black smoke poured from the back of my car. I stopped and wondered what I should do. A car pulled up behind me. It was the couple I had spoken to at the gas station. They said they would take me to my friend’s home. We chatted on the way into the city, and when I got out of the car, the husband gave me his business card.

I wrote him and his wife a thank-you note for helping me. Soon afterward, I received a Christmas present from them. Their note that came with it said that helping me had made their holidays meaningful.

Years later, I drove to a meeting in a nearby town in the morning. In late afternoon I returned to my car and found that I’d left the lights on all day, and the battery was dead. Then I noticed that the Friendly Ford dealership—a shop selling cars was right next door. I walked over and found two salesmen in the showroom.

"Just how friendly is Friendly Ford" I asked and explained my trouble. They quickly drove a pickup truck to my car and started it. They would accept no payment, so when I got home, I wrote them a note to say thanks. I received a letter back from one of the salesmen. No one had ever taken the time to write him and say thank you, and it meant a lot, he said.

"Thank you" are two powerful words. They’re easy to say and mean so much.

The words "took off" underlined in Paragraph 2 mean "()".

A.turned off

B.moved off

C.put up

D.set up

题型:填空题

通过交谈或问卷的方法了解一些人对某一事件的感受、态度和行为,在医学心理学的研究方法中属于()

A.调查法

B.临床观察法

C.个案法

D.实验法

E.心理测验法

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