感应式电能表的是由其本身的消耗以及由它引起的各元、部件达到热平衡状态所需的时间长短而

题型:单项选择题

问题:

感应式电能表的是由其本身的消耗以及由它引起的各元、部件达到热平衡状态所需的时间长短而定。对同一只电能表来讲,热稳定的时间()。

A.电流元件要比电压元件长

B.电压元件要比电流元件长

C.不一定一样

D.电压元件和电流元件一样长

考点:电能计量检定考试电能计量检定考试题库
题型:单项选择题

When kids at Archisha Singh’s school in Loudoun County have a birthday, no parents buy them birthday cakes.

Some schools are worried that children might become fat or eat unhealthy food, so they have banned(禁止) cupcakes altogether.

What do kids do? Birthday kids can donate a book. The headmaster of their school will then read it to their class. The headmaster also hands out birthday certificates(证书), special pencils, and makes sure the kids’ names are read out in the school’s morning news.

Parents can send stickers(贴纸), pencils and other things to students. None of the things can be food. If a child donates jump ropes or other sports equipment, that child may get his or her name on a certificate. It will then be displayed at school.

Archisha really misses cupcakes, especially those her mother used to make for her kindergarten class, but her school’s way is fun, too. “I like both ways,” she said.

The headmaster says it’s important that the school should be not only teaching, but offering healthy choices to kids. “There is a better life without cupcakes. If you eat a cupcake, then it’s gone in two seconds, but a book lasts a lifetime. The sports equipment lasts, and the kids can use it day after day.”

小题1:Some schools have banned cupcakes because ________.

A.they don’t like them

B.they are not delicious

C.they are unhealthy food

D.they are too expensive小题2:What do birthday kids do?

A.They can borrow a book.

B.They get birthday certificates.

C.They get special pens.

D.They eat birthday cakes.小题3:Which can not be sent to students?

A.Stickers.

B.Sweets.

C.Pencils.

D.Books.小题4:The headmaster thinks the school should ________.

A.offer healthy choices to kids

B.offer a better life to kids

C.teach students how to be healthy

D.give kids sports equipment

题型:单项选择题

以下各句中的“惟”只有哪个是音节助词()

A.不惟广裨乎素学

B.学者惟明

C.然惟于此,愈不敢自信

D.惟名利是务

题型:单项选择题

技术交底应根据()不同采取相应的方法。

A.工程规模和环境条件

B.工程规模和技术复杂程度

C.地质条件和技术复杂程度

D.工程规模和结构复杂程度

题型:单项选择题

以下关于面向对象方法中继承的叙述中,错误的是______。

A.继承是父类和子类之问共享数据和方法的机制

B.继承定义了一种类与类之间的关系

C.继承关系中的子类将拥有父类的全部属性和方法

D.继承仅仅允许单重继承,即不允许一个子类有多个父类

题型:单项选择题

盐酸普鲁卡因注射液中对氨基苯甲酸的检查是利用药物与杂质的

A.紫外吸收性质的差异
B.旋光性的差异
C.色谱行为的差异
D.酸碱性质的差异
E.氧化还原性质的差异

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