题目内容

下列叙述中,正确的一条是________。

A. CPU能直接读取硬盘上的数据
B. CPU能直接与内存储器交换数据
CPU由存储器和控制器组成
D. CPU主要用来存储程序和数据

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[音频]We all know that having friends is 1.___________, but why do we2._______ friendships with some people and not others? In some ways, the answer is 3. ___________: you become friends with someone because you have things in 4. ____________. Maybe you both like the same5. __________ team. Or perhaps you both love to play video games. Or maybe your 6. ____________ are similar: you’re a bit 7. ________ and the other person is, too.

架空线路是由()等主要元件组成的。

A. 导线
B. 电杆
C. 绝缘子
D. 金具

导线的常用材料有()。

A. 铁
B. 铜
C. 铝
D. 钢

电杆根据在线路中的不同作用和受力情况,可分为()等。

A. 直线杆
B. 耐张杆
C. 转角杆
D. 终端杆、分支杆、跨越杆

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