钢为了提高强度应选用()热处理。A、退火 B、正火 C、淬火+回火 D、回火

题型:单项选择题

问题:

钢为了提高强度应选用()热处理。

A、退火

B、正火

C、淬火+回火

D、回火

考点:铣工考试高级铣工考试高级铣工考试题库
题型:单项选择题

心脏肿瘤中,最常见的是()。

A.黏液瘤

B.畸胎瘤

C.横纹肌瘤

D.间叶细胞瘤

E.心包囊肿

题型:单项选择题

Madame Curie ,the youngest of five children ,was born in Warsaw ,Poland in 1867. Marie Curie's maiden name was Manya. Her parents were teachers,and she learned the importance of education at an early age. No higher education was offered to women in Poland at that time,so Manya took a job as a governess(女家庭教师). She sent part of her income to Paris to help pay for her older sister's medical studies. Her sister qualified as a doctor and married a fellow doctor in 1891. Manya went to join them in Paris ,changing her name to Marie. She entered the Sorbonne(now the Universities of Paris)and studied physics and mathematics, graduating at the top of her class. For the research she wanted to do , she was introduced to another young scientist, Pierre Curie. Later they fell in love with each other . After their marriage, they worked together on radioactivity.

Fame troubled Marie Curie and also her husband, because science was their world and in this world of science fame and honor to persons had no value. One day when a writer for a newspaper tried to ask Marie about herself and her thoughts and her beliefs, she answered him, “In science we must be interested in things,not in persons.” Much of the real character and spirit of this unusual woman was found in these few words,which she was later often to repeat. One evening, at a big party,a friend asked if she would like to meet the King of Greece,who was also a guest.She answered in her simple manner, “I don't see the value of it.” Then,seeing that she had hurt the feelings of her friend, she quickly added, “But …but…of course,I shall do whatever you please. Just as you please.”

1、What did Marie Curie once do to help pay for her older sister's medical studies?

A.She was a teacher.                   B.She was a doctor.

C.She was a governess.                 D.She was a waitress.

2、What was valuable to Marie Curie?

A.science and research.               B.fame and honor.

C.character and spirit.               D.persons and things.

3、The writer for a newspaper was interested in____.

A.things       B.Marie Curie          C.Marie's husband          D.persons

4、What do you think might have happened between Marie Curie and the King of Greece?

A.The King was angry with Marie Curie.

B.For the sake of her friend Marie Curie met the King of Greece.

C.The King of Greece wrote a letter to invite Marie Curie to meet him.

D.Marie Curie held another party for the King.

题型:单项选择题

患者,姜先生,25岁,低热、乏力、盗汗、消瘦、咳嗽、咳痰1个月,诊断为肺结核。

对此患者做结核菌素试验,正确的判断是()。

A.PPD不产生非特异性反应

B.阳性反应表示受过结核菌感染

C.反应强弱与结核病呈正相关

D.阴性反应可排除肺结核

E.一般对三岁以下的婴幼儿诊断价值较大

题型:单项选择题

100Mbps快速以太网与10Mbps传统以太网的帧结构()。

A.完全不同

B.帧头控制字节不同

C.完全相同

D.可以相同也可以不同

题型:单项选择题

简述劳动规章制度的制定原则。

更多题库