光通信与电通信相比,多了电→光、光→电的转换。()

题型:判断题

问题:

光通信与电通信相比,多了电→光、光→电的转换。()

考点:光纤数字通信调试工考试中级光纤数字通信调试工中级光纤数字通信调试工题库
题型:判断题

It’s reported that many people died of traffic accidents each year. Road safety has aroused the widely attention of the public. Many rules have made to reduce the traffic crashes, especially for the ones involved in the pedestrians. In my opinion, we should make road safety seriously in our daily life. While used the road, we must walk on the pavement and learn to protect us. Besides, car drivers should obey the traffic rules, that is both good for themselves and others.

In the word, obeying the traffic rules are what all of us should pay attention to particularly. After all, life is not a small matter.

题型:判断题

《历史学习新视野新知识》中写道:“此前处于相对隔绝状态的各个地区也在这一时期走出闭塞,开始建立直接的联系,人类迈出了从分散发展到整体进步最为关键的一步。”材料中的“最为关键的一步”是指()

A.新航路的开辟

B.文艺复兴

C.工业革命

D.十月革命

题型:判断题

编译时的多态性可以通过使用( )获得。

A.虚函数和指针

B.重载函数和析构函数

C.虚函数和对象

D.虚函数和引用

题型:判断题

川乌药材的断面特征是()

A.类白色,角质,形成层环纹呈圆形

B.黄棕色,粉质,形成层环纹呈圓形

C.淡棕色,角质,形成层环纹呈多角形

D.淡棕色,角质,形成层环纹呈圆形

E.类白色或浅灰黄色,粉质,形成层环纹呈多角形

题型:判断题

国库券通常平价发行,票面利率比较低。

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