热门试题:
[单选题]必须横越列车、车列时,应先确认列车、车列暂不移动,然后由( )越过。
A.平车中部
B.通过台上
C.两车车钩下
D.以上均可以
[单选题]启动抽油机时,要让曲柄摆动2~3次,利用曲柄平衡块的惯性作用,( )次点启抽油机。
A.1
B.2
C.3
D.4
[判断题] 同一企业生产、进口同一品种危险化学品的,按照生产企业进行一次登记,但应当提交进口危险化学品的有关信息。
A.正确
B.错误
[填空题]遇有危及人身或设备安全的紧急情况,可以不经供电调度批准,先行断开<--NRC-->或有条件断开的负荷开关、隔离开关,并立即报告供电调度。
[单项选择]下列指标中属于数量指标的是()。
A. 产量
B. 劳动生产率
C. 人口密度
D. 资金利税率
[多项选择]本质安全体系危险源风险等级可划分为()
A. 低风险
B. 一般风险
C. 中等风险
D. 重大风险
E. 特别重大风险
[判断题]AA099513
并励直流电动机励磁电压等于电动机的额定电压。
A.正确
B.错误
[多选题]在无绝缘隔板、安全遮栏措施的10kV设备处工作,作业人员工作中正常活动范围与设备带电部分的距离为()m时,设备应停电。
A.0.40
B.0.50
C.0.60
D.0.70
[单选题]墙壁开关一般离地不低于( )m 。
A.1
B.0.8
C.1.3
D.1.5
[单选题]( )是企业最小的组织单元和末级管理机构。
A.项目部
B.作业层班组
C.材料站
D.各工种作业小组
[判断题]电动机的外壳接地线是保护人身及电动机安全,所以禁止在运行中的电动机接地线上进行工作。( )
A.正确
B.错误
[填空题]在数据库系统中,实现各种数据管理功能的核心软件称为 【3】 。
[判断题]( )AB003零件的生产方式分为三种主要类型,即单件生产、大量生产和成批生产
A.正确
B.错误
[单选题]通常说的三相五线接零系统属于( )系统。
A.IT
B.TT
C.TN-C
D.TN-S
[单项选择]
A report consistently brought back by visitors to the US is how friendly, courteous and helpful most Americans were to them. To be fair, this observation is also frequently made of Canada and Canadians, and should best be considered North American. There are, of course, exceptions. Small-minded officials, rude waiters, and ill-mannered taxi drivers are hardly unknown in the US. Yet it is an observation made so frequently that it deserves comment. For a long period of time and in many parts of the country, a traveler was a welcome break in an otherwise dull existence.
Dullness and loneliness were common problems of the families who generally lived distant from one another. Strangers and travelers were welcome sources of diversion, and brought news of the outside world. The harsh realities of the frontier also shaped this tradition of hospitality.
Someone traveling alone, if hungry, injured, or ill, often had nowhere to turn except to the nearest cabin or settlement
A. culture exercises an influence over social interrelationship
B. courteous convention and individual interest are interrelated
C. various virtues manifest themselves exclusively among friends
D. social interrelationships equal the complex set of cultural conventions
[单选题]低压配电设备、低压电缆、集束导线停电检修,无法装设接地线时,应采取()或其他可靠隔离措施。
A.停电
B.悬挂标示牌
C.绝缘遮蔽
D.装设遮栏
[单选题]押运包裹的运价里程按( )计算。
A.实际径路
B.指定径路
C.计费径路
D.最短径路
[判断题]特种设备作业人员不需要参加安全教育和技能培训。
A.正确
B.错误
[单项选择]预防稳定型心绞痛可选用( )。
A. 普萘洛尔
B. 硝苯地平
C. 利多氟嗪
D. 莫索尼定
E. 硝酸甘油
[多选题]CTC分散自律模式下,进路操作命令可通过( )下达。
A.助调工作站
B.车站车务终端
C.车站自律机
D.联锁操表机
[单项选择]麻风腮疫苗是属于:()
A. 减毒活疫苗
B. 灭活疫苗
C. 类毒素
D. 抗毒素
[判断题]信号开放后,不得测试与该进路有关的设备。
A.正确
B.错误
[单选题]在边门玻璃安装过程中关键在于( )玻璃胶皮两角的安装进入。
A.上部
B.中部
C.下部
D.侧部
[简答题]简述农村党的建设“三级联创”活动的含义。
[填空题]Sign has become a scientific hot button. Only in the past 20 years have (36) in language study realized that signed languages are unique—a speech of the hand. They offer a new way to (37) how the brain generates and (38) language, and throw new light on an old scientific controversy. whether language, (39) with grammar, is something that we are born with, or whether it is a learned behavior. The current interest in sign language has roots in the (40) work of one rebel teacher at Gallaudet University in Washington, D. C., the world’s only liberal arts university for deaf people.
When Bill Stokoe went to Gallaudet to teach English, the school (41) him in a course in signing. But Stokoe noticed something odd. among themselves, students signed differently from his classroom teacher.
Stokoe had been (42) a sort of gestural code, each movement of the hands (43) a word in English. At the time
[判断题]保险丝可以用铜线、铁线代替。
A.正确
B.错误
[单项选择]
2008年长三角部分城市国内生产总值情况表 城市 | 国内生产总值(亿元) | 第一产业(亿元) | 同比增长(%) | 第二产业(亿元) | 同比增长(%) | 第三产业(亿元) | 同比增长(%) | 上海市 | 13698.15 |
[单选题]3.319. 第319题电动车常规充电方式充电时间要持续()个小时左右。相应的充电器的工作和安装成本相对比较低。—— A. 1 B. 2 C. 5 D. 8
[判断题]美国洛杉矶光化学烟雾事件是由燃煤炉灶烟尘和二氧化硫污染而造成。
[填空题]以下程序的执行结果是 ______。
#include<iostream.h>
void main( )
{
int x=5 y=2;
cout<<! (y==x/2)<<",";
cout<<(y!=x%3)<<",";
cout<<(x>0 && y<0=<<",";
cout<<(x!=y||x>=y)<<endl;
}
[判断题]接收机使用的是外部直流电源,因此不会出现电池故障。( ) A.正确 B.错误
[单选题]:下列各项,不应通过“固定资产清理”科目核算的有( )。 A.出售的固定资产 B.盘亏的固定资产 C.报废的固定资产 D.毁损的固定资产
[多选题]根据火场实际情况和消防车数量、供水性能等特点,火场供水的常见方法有()。 A.直接供水; B.串联供水; C.运水供水; D.传递供水; E.排吸式供水;
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