在PLC输入输出分配表中,控制正转的接触器用（）表示

A、工业控制计算机系统的I/O设备与主机之间采用微电联系，一般没有电气隔离，没有专用I/O接口，外部控制信号需经A/D、D/A转换后方可与计算机相连。

B、PLC可直接处理工业现场的强电信号，控制强电设备，无需再做A/D，D/A转换接口。

C、工业控制计算机的抗干扰能力强，可以直接连接到工业现场的输入、输出机构上。

D、由于PLC内部有光—电耦合电路等抗干扰设计进行电气隔离，输出采用继电器、可控硅或大功率晶体管进行功率放大，因而可直接驱动执行机构。

A、直接连接KM1和KM2

B、输出口电路为DC类型的PLC不能直接连接KM，要经过中间继电器KA进行过渡

C、输出口电路为RELAY类型的PLC不能直接连接KM，要经过中间继电器KA进行过渡

D、连接KA1和KA2

听力原文：To the Sony engineers who designed it, the Walkman was not quite what they wanted听力原文： To the Sony engineers who designed it, the Walkman was not quite what they wanted. They were aiming for something different—a stereo version of Sony’s Pressman. In 1978, Sony engineers started shrinking stereo components. They could fit in playback parts and two tiny speakers, but not the recording mechanism. One day Masaru Ibuka, Sony’s co-founder, wandered by and heard the small stereo. He recalled a project being developed elsewhere in the company—lightweight headphones. ’What if you got rid of the speakers and combined your stereo with the headphones ’ asked Ibuka. ’The headphones would use less power and increase the quality of the sound. Soon the teenagers discovered the new invention. Perfect for sports, small enough to fit into the pocket, the Walkman became a raging success. （）

A．How Sony engineers improved sound quality．

B．How a popular product was inventeD

C．How Masaru Ibuka made a design．

D．How Sony stereos became a raging success．

The newly－designed cr is on show now. I wonder .how much does it costB．who designed it C．where wThe newly-designed cr is on show now. I wonder .how much does it cost B．who designed it C．where ws it mde D．tht the cr will be sold in Chin

A．how much does it cost

B．who designed it

C．where was it made

D．that the car will be sold in China

A．事物是普遍联系的

B．联系是客观的

C．主观想象的联系不能够代替客观事物本身的联系

D．并不是每一事物都处在普遍联系中

针对下述案例,请问如果你是李丽,碰到这样的事情,应该如何去应答 。 概述: 王经理意识到他的秘书李丽近来工作负担很重,他非常感激她,想要减轻李丽的工作负担,就把李丽叫到了办公室,有了如下谈话: “近来你的工作很重,所以我想把客户回访的事交给小马去做,你看怎么样 ” 李丽听到之后的第一反应是:上司认为她工作能力不强,无法承受现有的负荷,她觉得受到了伤害,感到很委屈。但是她又不想让上司知道自己的这种想法,然后勉强挤出一丝微笑,说了声: “谢谢。”上司以为李丽理解了自己的意思,并且很感激他做出的安排