矩形八角形断面实心金属衬垫密封,适用于()的设备上。 A.低温、低压 B.中温、中压

题型:单项选择题

问题:

矩形八角形断面实心金属衬垫密封,适用于()的设备上。

A.低温、低压

B.中温、中压

C.常温、无压

D.高温、高压

考点:钳工技能考试中级机修钳工考试中级机修钳工考试题库
题型:单项选择题

16周岁以上不满18周岁的公民,以自己的劳动收入为主要生活来源的,视为完全民事行为能力人。

题型:单项选择题

安全附件的设计、制造,应符合相应国家标准、行业标准的规定。()

A.对

B.错

题型:单项选择题

阅读理解。

    Both my parents came from towns in Mexico. Then I was born in El Paso, Texas,

and when I was four, my family moved to a housing project in East Los Angeles.

    Even though we struggled to make ends meet, my parents stressed to me and my

four brothers and sisters how fortunate we were to live in a great country with limitless

opportunities. They influenced us with the concepts of family, faith and nationalism.

    I got my first real job when I was ten. My dad injured his back working in a cardboard-

box factory and was retrained as a hairstylist. He rented space in a little shopping mall

and gave his shop the fancy name of Mr Ben's Coiffure.

    The owner of the shopping center gave Dad a discount on his rent for cleaning the

parking lot three nights a week, which meant getting up at 3 a.m.. To pick up rubbish,

Dad used a little machine that looked like a lawn mower. Mom and I emptied garbage

cans and picked up litter by hand. It took two to three hours to clean the lot. I'd sleep

in the car on the way home.

    I did this for two years, but the lessons I learned have lasted a lifetime. I acquired

discipline and a strong work ethic (道德), and learned at an early age the importance of

balancing life's competing interests-in my case, school, homework and a job. This really

helped during my senior year of a high school, when I worked 40 hours a week flipping

burgers at a fast-food joint while taking a full load of college preparation courses.

    The hard work paid off. I attended the US Military Academy and went on to receive

graduate degrees in law and business from Harvard. Later, I joined a big Los Angeles

law firm and was elected to the California State Assembly (州议会). In these jobs and

in everything else I've done, I have never forgotten those nights in the parking lot. The

experience taught me that there is dignity in all work and that if people are working to

provide for themselves and their families that is something we should honor.

1. Before my father got injured,we _____. [ ]

A. didn't like living in the USA

B. lived a poor but happy life

C. were lucky to move to the USA

D. had many ways to make money

2. When he recovered,to make a living my father _____. [ ]

A. ran a small shopping mall

B. did a part-time job

C. worked as a barber

D. became a street cleaner

3. Working in the parking lot for two years had taught me _____. [ ]

A. how to obey school discipline

B. how to do two things well at a time

C. that discipline and work were of equal value

D. that I must do as many things as possible at a time

4. The author tells us in the last paragraph that we should be proud of those who _____. [      ]

A. have done all kinds of jobs

B. are cleaning the parking lot

C. have achieved a lot in their lives

D. are bearing their responsibilities

题型:单项选择题

为了保证进站罐车的计量精度,站内的场地应该保持()。

A、光滑

B、凸凹不平

C、平行

D、平整

题型:单项选择题

试述苗族传统社会组织的类型、结构特点及其社会功能。

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