TRT发电机转子过电压是由于运行中()而引起的。A、灭磁开关突然合入 B、灭磁开关突然

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问题:

TRT发电机转子过电压是由于运行中()而引起的。

A、灭磁开关突然合入

B、灭磁开关突然断开

C、励磁回路突然发生一点接地

考点:煤气站煤气操作考试煤气站煤气操作考试题库
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Classes resumed (恢复) Thursday for the students of a school in Newtown, Conn, where a gunman last month killed 20 children and 6 adults in the second-largest school shooting in U.S. history.

With their school still being treated as a crime scene, more than 400 students of Sandy Hook Primary School attended classes in neighbouring Monroe.

Returning students, teachers and administrators were met by a large police presence outside their new school. Several officers guarded the entrance and checked IDs of parents dropping off children.

Law-enforcement officers guarding the new school called it “the safest school in America.”

Students found the same chairs and desks, when possible. Their classroom walls were painted the same colours and hung with the same pictures. Other details, such as the location of bookshelves and cubby holes, were replicated (复制) as much as possible.

The school district said parents who wanted to be close to their children were welcome to visit and stay in classrooms or an auditorium.

Newtown superintendent Janet Robinson said officials would do their best to make the students feel at ease.

“We will be doing a normal day.” She said.

小题1:The students of Sandy Hook Elementary School resumed classes in a new school in Monroe because       .

A.their school fell down because of a natural disaster

B.the government needs to use the land of their school

C.their school is too small to hold more than 400 students

D.a shooting crime happened in their school and it was still treated as a crime scene小题2:Why do the law-enforcement officers call the new school “the safest school in America?

A. There are few policemen outside the new school.

B. The school has the newest classrooms and buildings.

C. Any adult who is near the new school needn’t be checked his ID.

D. There are some officers who guarded the entrance of the new school.

小题3:A lot of things in the new school were replicated as much as possible except       .

A.chairs and desks

B.classroom walls

C.the location of the fans and air conditioners

D.the location of bookshelves and cubby holes小题4:“… to make the students feel at ease.” The phrase “feel at ease” most likely means       .

A.feel at home

B.feel fresh and curious

C.feel happy and lucky

D.feel safe and relaxed小题5:Which of the following is NOT true according to the passage?

A.The students have resumed classes in a new school.

B.A shooting crime happened in an American primary school.

C.The officials will do their best to make the students feel at ease.

D.The school children’s parents are not allowed to stay with their children in school.

题型:单项选择题

减弱噪声的途径有三种方法.在汽车的排气管上加消声器,这是在______处减弱噪声;戴上耳塞,减弱传入人耳的噪声,这是在______处减弱噪声;在住宅区植树,这是在______减少噪声.

题型:单项选择题

( )是保证录用人民警察素质的第一道程序。

A.发布考试公告

B.进行资格审查

C.考试。

D.考核

题型:单项选择题

下面四个选项中,说法有误的是( )。

A.因不可抗力或者其他特殊情况而耽误法定申请复议时效的,可以从障碍消除之日起计算

B.一般来说,在复议期间,已经生效的具体行政行为对申请人没有约束力

C.对于复议申请书未载明应当载明的内容的,应当把复议申请书退回申请人,限期补正,如果过期不补正的,视为未申请

D.具体行政行为明显不当的具体表现为:行政处罚畸轻畸重、行政处理反复无常或者简单划一等

题型:单项选择题

建立一个供应商零件数据库。其中“供应商”表S(Sno,Sname,Zip,City)中的属性分别表示:供应商代码、供应商名、供应商邮编、供应商所在城市,其函数依赖为:Sno→(Sname,Zip,City),Zip→City。“零件”表P(Pno,Pname,Color,Weight,City),表示零件号、零件名、颜色、重量及产地。表S与表P之间的关系SP(Sno,Pno,Price,Qty)表示供应商代码、零件号、价格、数量。

A.FOREIGN KEY B.NOT NULL UNIQUE
C.FOREIGN KEY(Sno) D.PRIMARY KEY(Sname)

A.“供应商”表S属于 (7)
B.若要求:供应商代码不能为空,且值是唯一的,供应商名也是唯一的;零件号不能为空,且值是唯一的;一个供应商可以供应多种零件,而一种零件可以由多个供应商供应。请将下面的SQL语句空缺部分补充完整。
CREATE TABLE S(Sno CHAR(5) (8)
Sname CHAR(30)UNIQUE,
Zip CHAR(8),
City CHAR(20)
(9) );

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