要使渗碳工件表层高硬度、高耐磨还需进行()热处理。A、退火B、正火C、淬火D、淬火后

题型:单项选择题

问题:

要使渗碳工件表层高硬度、高耐磨还需进行()热处理。

A、退火

B、正火

C、淬火

D、淬火后回火

考点:数控车床工考试数控车床工考试题库
题型:单项选择题

秦穆公请伯乐推荐继任者,伯乐说九方皋可堪此任。九方皋奉秦穆公之命外出寻找千里马,三月后复命说马已找到。穆公问:何马也九方皋答道:黄色的公马。穆公派人去取马,取马的人回报说是匹黑母马。穆公不悦,责问伯乐:你推荐的这位相马者连马的黄黑公母都不辨,怎能鉴别其好坏伯乐答道:“若皋之所观,天机也。得其精而忘其粗,在其内而忘其外。见其所见,不见其所不见;视其所视,而遗其所不视。若皋之相者,乃有贵乎马者也。”马至,果千里之马。
这段话主要支持的观点是( )。

A.不能由马的颜色和性别来辨别千里马
B.马的颜色和性别是辨别千里马的关键
C.事物的本质是由其内因决定的
D.见其所见,不见其所不见是正确认识事物的关键

题型:单项选择题

土地使用权出租的,实际上是将出让取得的土地所有权的()。

A.全部权利出租给承租人 

B.部分权利出租给承租人 

C.部分权利转让给承租人 

D.全部权利转让给承租人

题型:单项选择题

A heart attack can happen to anyone. Let’s say it’s 5:20 pm and you’re driving home alone after an unusually hard day on the job. You’re really tired, upset and frustrated. Suddenly, you start experiencing terrible pains in your chest, and they spread to your arm and up into your jaw. You are only about five miles from the hospital which is nearest your home. Unfortunately, you don’t know if you’ll be able to make it that far. You’ve been trained in a CPR course, but the guy who teaches the course hasn’t told you how to perform it on yourself. What can you do?

Since many people are alone when they suffer a heart attack, this article seems to be quite useful. Without help, people whose hearts stop beating properly and who begin to feel faint (头晕的) have only about 10 seconds left before they faint. However, they can help themselves by coughing over and over very loudly. A deep breath should be taken before each cough, and the cough must be deep and prolonged, coming from inside the chest. Deep breaths and coughing must be repeated about every two seconds without stopping until help arrives, or until the heart is felt to be beating normally again. Deep breaths get oxygen into the lungs and coughing movements squeeze (挤压) the heart and keep the blood circulating. The squeezing pressure on the heart also helps it beat normally. In this way, people who are suffering a heart attack can get to a phone and between breaths call for help.

Tell as many other people as possible about this, as it may save their lives!

64. What is the main idea of this passage?

A. The good thing about coughing.

B. How to help people survive a heart attack.

C. How to avoid having a heart attack.

D. How to survive a heart attack when alone.

65. According to the passage, CPR is most probably something done to ________.

A. regain a person’s breath and heart beat

B. oneself to help survive a heart attack

C. teach people how to stay in good condition

D. train people how to stay calm when facing danger

66. According to the second paragraph, what’s the use of taking deep breaths during a heart attack?

A. It helps to squeeze the heart.                        

B. It helps to keep the blood circulating.

C. It helps to get oxygen into the lungs.             

D. It helps to reduce the pains in the chest.

67. In which section of a newspaper could you read this passage?

A. Health care.     B. Advertisement.        C. Family.       D. Education.

题型:单项选择题

流动负债是指在一年或者超过一年的一个营业周期内偿还的债务。寿险公司的流动负债包括()等。

A.寿险责任准备金

B.长期责任准备金

C.未到期责任准备金

D.长期健康险责任准备金

题型:单项选择题

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