问题 问答题 简答题

压力表式温度计的测温原理是什么?它的结构如何?

答案

参考答案:

压力表式温度计的测温原理:根据封闭容器内的液体、气体或低沸点液体的饱和蒸汽,受热后体积膨胀或压力变化这一原理而制做的,并用压力表来测量这种变化,从而测量出温度。

压力表式温度计由感温元件感温包、传压元件毛细管、变形元件弹簧管压力表组成。

阅读理解

She is a beautiful red-haired girl. she has been shopping with her mom in Wal-Mart. It was raining hard outside. We all stood there under the awning (雨篷). Her voice was so sweet. “Mom, let’s run through the rain,” she said.

“What?” Mom asked.

“Let’s run through the rain!”

“No, honey. We’ll wait until it slows down a bit,” Mom replied.

The child waited about another minute and repeated, “Mom, let’s run through the rain.”

“We’ll get wet if we do,” Mom said.

“No, we won’t, Mom. That’s not what you said this morning,” the young girl said as she pulled her mom’s arm.

“This morning? When did I say we could run through the rain and not get wet?”

“Don’t you remember? When you were talking to Daddy about his cancer(癌症), you said, we can get through anything!”

The crowd(人群) became silent. Nothing could be heard but the rain. No one came or left in the next few minutes. Mom thought for a moment about what she would say.

“Honey, you are right. Let’s run through the rain. If we get wet, maybe we’ll just need to get a wash,” Mom said.

Then off they ran. People all stood watching, smiling and laughing as they rushed past the cars and through the puddles(水坑).

They held their shopping bags over their heads. They got wet through. But they were followed by a few who laughed like children all the way to their cars.

People can take away your money and health. But no one can ever take away your memories….So don’t forget to make time to make memories every day.

小题1:Mom told the girl’s father “we can get through anything” in order to _________.

A.show she is strong

B.encourage him

C.prove her ability

D.make memories小题2:The best title of the passage is “________________”.

A.A Mom and Her Girl

B.Shopping in Wal-Mart

C.Health Is Most Important

D.Let’s Run through the Rain

单项选择题