区分优质钢的标准是()。A.碳含量 B.铁含量 C.磷、硫含量

题型:单项选择题

问题:

区分优质钢的标准是()。

A.碳含量

B.铁含量

C.磷、硫含量

考点:轧钢工考试高级轧钢工高级轧钢工题库
题型:单项选择题

一内壁光滑的环形细圆管,固定于竖直平面内,环的半径为R(比细管的内径大得多.在圆管中有两个直径与细管内径相同的小球(可视为质点).A球的质量为m1,B球的质量为m2.它们沿环形圆管顺时针运动,经过最低点时的速度都为V0.则A球在最低点受到的向心力的大小为______,设A球运动到最低点时,B球恰好运动到最高点,若要此时两球作用于圆管的合力为零,那么m1、m2、R与V0应满足的关系式是______.

题型:单项选择题

小波上学就要迟到了,他不顾一切地把车骑得飞快,而且还闯了一个红灯,最后总算准时“飞”到了学校,没有为班级扣分。小波的做法      [ ]

A.维护了集体利益,值得表扬

B.为集体的利益而放弃对社会应尽的责任,当然不对

C.违反规则是为了准时到校,可以理解

D.心甘情愿累自己,争分夺秒为集体

题型:单项选择题

I live in the country and my father was a farmer.51. ______
He is now forty-five year old. Because of years of 52. ______
hard work, he looks old than his age. When I was53. ______
young, he is used to tell me the importance of study. 54. ______
Father knows little about English and other subjects, 55. ______
but he usually gives me some good advices on how56. ______
to learn my lessons good. He is not only kind to me 57. ______
but also very strict in me. With his help, I’ve made 58. ______
great progress. I’ll never to forget what he taught 59. ______
me. I think my father is best father in the world. 60. ______

题型:单项选择题

贾国仁、贾国满兄弟二人合伙经营汽车运输,雇司机开车,兄弟二人轮流领车运输。时值贾国满领车拉白灰,当其指挥一辆挂斗车倒车时,由于向后路滑,刹车后汽车仍向后滑动,贾国满被挤身亡。则关于本案,下列说法正确的是:

A.贾国仁作为合伙人,应依据合伙协议承担侵权责任
B.贾国仁应承担违约责任
C.贾国仁应以雇主身份,承担雇主责任
D.贾国仁不承担任何责任

题型:单项选择题

孕42周分娩男婴,出生体重4500g,羊水Ⅲ度,生后Apgar评分1分钟为3分,窒息复苏时气管内吸出胎粪。

该患儿于生后1小时出现气促、发绀、呻吟、三凹征,双肺可闻及粗湿啰音,听诊左肺呼吸音较右肺降低。考虑诊断为()

A.胎粪吸入综合征

B.新生儿肺出血

C.湿肺

D.新生儿呼吸窘迫综合征

E.宫内感染性肺炎

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