【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
【简答题】Write a notice 登录批改网,作文号为: 1589614
【简答题】-What did you think of her speech? -She__________for one hour but didn’t__________much.
【单选题】2003年10月15日我国成功发射了神舟五号载人飞船,标志着我国在航天领域又有重大突破,发射神舟号的火箭用的是长征Ⅱ(F)型火箭,该火箭的燃料是偏二甲基肼[(CH 3 ) 2 N-NH 2 ],氧化剂是四氧化二氮,发生的反应可写作: (CH 3 ) 2 N-NH 2 +2N 2 O 4 点燃 . 3N 2 ↑+2CO 2 ↑+4H 2 O↑ 下列有关说法不正确的是( )
A.
偏二甲基肼中原子个数比为C:H:N=1:4:1
D.
在宇宙仓中(失重条件下)比地球上难做过滤实验
【单选题】She didn't think _________ she did wrong that day. [ ]
【单选题】2003年10月15日,中国成功发射了神舟五号载人飞船,中国是世界上第几个独立拥有该技术的国家?
【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.
【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.
【简答题】2003 年,中国成功发射了"神舟五号"载人飞船,使中国成为第三个发射载人飞船的国家。