【判断题】个人防护用品主要有实验防护服、护目镜、面罩、口罩、手套、帽子、防护鞋等
【单选题】What did the woman think of the new wing of the museum?
A.
She was impressed by it.
B.
It was a waste of money.
C.
She was amazed that it had opened so soon.
D.
She didn't like it as much as the other wings.
【多选题】根据元件表示方法不同,原理图有()画法。
【简答题】2003年10月15日09时00分 在酒泉卫星发射中心我国成功发射了“神舟五号”载人飞船,它绕地球飞行了14圈,共飞行了约590200km,这个飞行距离用科学记数法表示为______km.
【单选题】使用用户自制元件库的方法: 当原理图元件库与原理图不在同一个数据库(ddb)下,可以用( )方法将自制元件放置到原理图中。