热式风速仪相对于其他种类的风速仪器,低风速时的分辨率可以达到()m/s,所以它可以用

题型:单项选择题

问题:

热式风速仪相对于其他种类的风速仪器,低风速时的分辨率可以达到()m/s,所以它可以用来测量各种风速,尤其在低风速测量中有着不可替代的作用。

A.0.1

B.0.05

C.0.01

D.0.005

考点:烟叶制丝工高级烟叶制丝工高级烟叶制丝工题库
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如果L代表铁路网长度,A代表节点分布地域的面积,N代表节点数(万个),C代表连接系数,则采用国土节点法对铁路网规模进行预测的模型为()。

A.L=A(CN)1/2

B.L=N(AC)1/2

C.L=C(A/N)1/2

D.L=C(AN)1/2

题型:单项选择题

Four years ago my sweet mom went to be with her Lord.She did it her way.

I got the call at work, and I headed home quickly.Mom and Dad lived on a small farm that they had owned since I was seven.I hated going there every weekend.There was nothing for a young girl to do but watch the one station on the old TV set, if the weather allowed reception.

My mom, on the other hand, loved the peace and quiet of the land and loved to work in the garden among her flowers and vegetables.The place was rustic, with no indoor plumbing or heat.We had a big wood stove in the kitchen that did its best to heat the little farmhouse, but it always seemed cold and too quiet to me.

In the evenings, my mom and I would sit for hours singing in the little kitchen.I sang the melody and Mom harmonized.Her favorite song was "Moon River" and we sang it over and over.Mom told me stories about how when I was a little girl, I could sing before I could talk.She loved to tell how my playpen(婴儿圈栏)sat in the kitchen next to the radio and there was one song I particularly loved called "Ivory Tower".

As time passed, I had my own children and went to visit every week or two.The kids loved the farm and the tractor rides with my dad.Me, well, I still hated the silence of the farm.While my mom loved to sit at her kitchen table and look out at her garden and flowers and retell all the old stories, I missed the hustle and bustle(喧闹)of my life at home.But I sat there listening quietly as she reminisced

Now, I sat back in the silence and the silence was deafening so I finally leaned over to turn on an old radio.Music always comforted me.

My heart skipped a beat."Moon River" was playing on the radio.I sat there stunned, with a tear running down my cheek, as I listened to every familiar note.

Then the radio announcer of this oldie station came on."Here's one we haven't heard in a while," and an unfamiliar song began.I began to cry harder as I heard the words sung over the airwaves."Come down, come down from your Ivory Tower...."

小题1:The writer didn’t like staying on the farm for the following reasons Except that ________.

A.it was too cold and quiet

B.she could only sing one song on the small farm

C.there was nothing more that could make her excited

D.The place was rustic, with no indoor plumbing or heat小题2:From the first paragraph, we know that the writer’s mother ________.

A.passed away four years ago

B.left the small farm with Lord

C.left for Lord to live her own way

D.preferred to be with Lord小题3:The underlined word reminisced in the fifth paragraph probably means ________.

A.recalled

B.comforted

C.shouted

D.sighed小题4:Which of the following statements is NOT true according to the passage _______.

A.The writer was able to sing before she could speak.

B.The writer preferred to live a busy life in the city.

C.The writer was still quite familiar with the song "Ivory Tower".

D.The writer treasured all her childhood memories in the small farmhouse.小题5:Which of the following would be the best title for this passage? _______

A.Cherish life

B.My happy childhood

C.Our small farmhouse

D.Mom’s music

题型:单项选择题

一般而言,流行病学研究的起点是

A.描述性研究
B.队列研究
C.病例对照研究
D.实验性研究
E.理论性研究

题型:单项选择题

投影器容易产生图像梯形畸变,解决的方法是()

A.让银幕前倾

B.让银幕后倾

C.让银幕上移

D.让银幕下移

题型:单项选择题

出现颅内高压危象,首选的紧急处理是

A.给予速尿

B.甘露醇快速滴入

C.给予肾上腺素皮质激素

D.给予细胞活化剂ATP

E.给予血浆或白蛋白

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