判断题

装卸搬运本身并不产生价值。

【参考答案】

正确

(↓↓↓ 点击‘点击查看答案’看答案解析 ↓↓↓)

<上一题目录下一题>

热门试题

单项选择题

Porter's company has decided to let employees use instant messaging (IM) as an internal communication tool, and she wants to make sure that she's using it professionally. What should she do? A、 Make sure she's available via IM at all times so that her colleagues can always reach her. B、 Include both professional and personal contacts on the same IM contact list for efficiency. C、 Respect her receivers by using proper grammar, spelling, and proofreading in her instant messages. D、 Create an imaginative IM name for herself such as PrettySmart1.

单项选择题

晶闸管正常导通的条件为：（）

A.正向偏置电压、触发信号
B.反向偏置电压、触发信号
C.正常的散热及足够高的正向电压
D.正常的散热及足够高的正向电压

相关试题