移动端

  • 题王微信公众号

    题王微信公众号

    微信搜“题王网”真题密题、最新资讯、考试攻略、轻松拿下考试

单选题

若整流电路全部由晶闸管组成,则构成()整流电路。

发布日期:2021-03-22

若整流电路全部由晶闸管组成,则构成()整流电路。
A

不控

B

半控

C

全控

题王网让考试变得更简单

扫码关注题王,更多免费功能准备上线!

此试题出现在

铁路职业技能鉴定考试

铁路机务系统考试

去刷题
热门试题热门资讯 相关试题

TechnologyWhen faced with some new and possibly confusing technological change, most people react in one of two ways. They (1)____refuse to accept anything new, claiming that it is unnecessary or too complicated or that it somehow makes life less than human. Or they learn to (2) ada____ to the new invention, and eventually wonder how they could possibly have existed without it. (3)____computers as an example. For many of us, they still represent a (4) thr____ to our freedom, and give us a frightening sense of a future in which all (5)____(decide) will be taken by machines. This may be because they seem mysterious, and difficult to (6) und____. Ask most people what you use a home computer for, and you can usually get vague answers about how “they give you information”. In fact, even those of us who are familiar with computers, and use them in our daily work, have very little idea of how they (7)____. But it does not take long to learn how to operate a business programme, even if things occasionally go (8)____for no apparent reason. Presumably much the same happened when the telephone and the television became widespread. What seems to alarm most people is the speed of (9)____(technology) change, rather than change itself. And the objections that are made to new technology may well have a point to them, (10) si____ change is not always an improvement. As we discover during power cuts, there is a lot to be said for the oil lamp, the coal fire, and forms of entertainment, such as books or board games, that don’t have to be plugged into work.

康明斯KTA-l9G2型柴油机的气缸布置形式为()

在D盘中有一个文件,其文件名为"D:///信息处理技术员.DOC",现需要在桌面上建立该文件的快捷方式,可用鼠标右键单击该文件图标,然后在弹出的快捷菜单中()。

城市社区健康教育主要形式有通过报纸、广播电视台、固定的宣传阵地、社区活动中心和文化教育部门组织开展健康教育和()。

停电作业时,作业人员(包括所持的机具、材料、零部件等)与周围带电设备的距离如何规定?

一般来说,人员录用决策的策略主要有()。

患者男,31岁。转移性右下腹痛伴恶心、呕吐、发热24小时。查体:T38.7℃。右下腹压痛、反跳痛、肌紧张。实验室检查:白细胞13.0×109/L,中性粒细胞86%。尿常规:白细胞(1~2)/HP,红细胞(2~3)/HP。 如果手术,最严重的手术并发症是()

下列属于江苏省昆曲代表人物“六朵梅花”的有(  )。

请简述规则式园林的特点。

一座焦炉其燃烧室数目比炭化室多()。

暂无相关推荐~