如图是初中化学实验室常见的气体制取和性质探究的实验装置．请你据图回答下列问题．

已知某种纸一张的厚度约为0.0089cm，用科学记数法表示这个数为（   ）

对于上述插座图片，以下设计分析中，不能体现技术规范原则的是（   ）

1944年6月6日，盟军将领巴顿将军在给儿子乔治的信中写道：“BBC电台今天早晨说，盟军空降部队和登陆艇大规模在海岸登陆，虽然没有亲自参加此次军事行动，我率领的这支英雄部队很快就会在那里了。”信中“此次军事行动”是指（    ）

     Tom and Mike are good friends. They are good with children. They want to find jobs in summer vacation. This Friday Tom tells Mike that Sunson School Trip needs teachers to help with sports, music and computer. Mike is glad to know that.
    Tom can play basketball, volleyball, and he can swim. Mike can play the violin, the trumpet, the drums and the guitar, and he can swim,too. Tom and Mike like computers very much. Can they join Sunson School Trip?