光电耦合器的作用是()。A.在信号传输中起到隔离作用 B.在光电网络中进行信号转换

题型:多项选择题

问题:

光电耦合器的作用是()。

A.在信号传输中起到隔离作用

B.在光电网络中进行信号转换

C.防止信号损失

D.抗电磁干扰

考点:机动车维修技术车载网络系统结构与检修车载网络系统结构与检修题库
题型:多项选择题

根据《城乡规划法》的规定,下列关于建设项目选址规划管理审核的内容表述中不符合规定的是( )。

A.建设项目的选址布局不能造成对城乡环境的污染和破坏,应当与环境保护规划相协调

B.一般大中型建设项目都有生活设施配套的要求,但无需考虑建设项目配套的生活设施与城乡居住区及公共服务设施规划的衔接与协调

C.建设项目的选址必须符合经批准的城乡规划的要求,其选址布局应与城乡规划布局相协调

D.产生放射性危害物质的建设项目和设施,必须避开市区和城乡居民密集区,同时必须设置防护工程,妥善考虑事故处理应急措施和废弃物的处理设施

题型:多项选择题

金钱草的性状鉴别特征有

A.茎表面浅棕色,密被黄色伸展的短柔毛

B.茎表面棕色或暗棕红色,无毛或几无毛

C.单叶对生,两面无毛或几无毛

D.羽状复叶互生,小叶1~3片,下表面具灰白色紧贴的绒毛

E.叶片水浸后对光透视,可见黑色或褐色条纹

题型:多项选择题

The expression “Go for it!” is a way of encouraging someone to try something.

“Go for it!” means you should not worry about failure or be too careful. You should take a chance, be brave, and act firmly.

“Go for it!” gets name from football. Not football as it is played in most countries such as England, Egypt or Japan, but the kind of football played in the United States and Canada.

One of the most exciting times in football comes when a team has failed, after three attempts, to move the ball forward ten yards. The team must make a critical decision.

The conservative choice is to kick the ball and accept temporary defeat in order to gain a good position for your team the next time it gets the ball. The more exciting choice, however, is to try a fourth and final time to gain the remaining yards needed.

In the nineteen eighties, people began using this expression in many kinds of situations to encourage someone to act bravely.

There is no guarantee(保证) that the action you “Go for it!” will succeed. But that is the chance you take when you decide to go for it. You put your fears behind. You choose courage over safety. You hold your breath and go for it.

小题1:The expression “Go for it!” comes from______.

A.English football

B.Egyptian football

C.Japanese football

D.American football小题2:According to the passage, when we decide to go for it, we only consider______.

A.safety

B.action

C.result

D.situation小题3:In which of the following situations should we use the expression nowadays?

A.We decide to avoid trouble or danger for the future.

B.We try to improve our English for better education.

C.We need to make a quick decision at the last moment.

D.We have to make a choice between success and failure.

题型:多项选择题

制定和调整抄表计划有哪些注意事项?

题型:多项选择题

检查驴头各部位焊口有无开裂现象,有无(),如果变形和扭曲超过标准要求,则不可用。

A、变形和扭曲

B、变形和开焊

C、变换和错位

D、损伤和脱漆

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