旅游投诉机关做出受理决定后，应当及时通知被投诉者，被投诉者应在接到通知之日起（）内，

You can’t see any object unless light from that object gets into your eyes．Some of the things you see give off light of their own。The sun，the stars，a lighted lamp are the examples that can be seen by their own light．But most of the things you see are not giving off light of their own．They are just reflecting(反射)light that falls on them from the sun or some other luminous bodies．The moon，for example，doesn’t give off any light of its own．It is not 1uminous．You see it because sunlight falls on it and some of the sunlight reflects on the earth．So moonlight is only second—hand sunlight．

When you look at a book，it sends some of the light which fails on it to your eyes，and you see the book．If light could be kept out from where you’re so that there would be no light from the book to reflect．Then you couldn’t see the book even with your eyes wide open．Light travels so fast that the time in which it travels from the book you’re reading to your eyes is as short as if there were no time at time．Light reaches us from the moon，which is about 380，000 kilometres away，in only a little more than a second．

小题1:You can see the book because________．

A．your eyes are close to it

B．it reflects some of the light

C．it has light of its own

D．it is big enough to be seen小题2:The Chinese meaning of the world“luminous”is close to_______．

A．闪光的

B．看不见的

C．发光的

D．明亮的小题3:________has light of its own．

A．The moon

B．The earth

C．The sun

D．The satellite of Dong Fong Hong小题4:Light travels about_________kilometers per second．

A．300，000

B．100，000

C．400，000

D．190，000小题5:Which of the following is TRUE?

A．All the things you can see give off light．

B．Light from the book is much faster than that from the moon．

C．The moment you open your eyes，the light from the book travels to your eyes．

D．Light travels so fast that there is no time for you to read．

紧急电空阀的功能是：（）。

如图所示，水平茶几的中央放着一个盛水的圆柱形平底玻璃杯．用刻度尺测得水深是10cm，玻璃杯的底面积为5.0×10^﹣3m²．g取10N/kg．

（1）求水对杯底的压力和压强；

（2）将一健身球轻轻放入杯中，发现水面上升了2.2cm，且未溢出．求健身球受到的浮力．

红日运输公司是一家国有企业，因经营不善进入破产程序。与该公司有关的下列哪种款项或费用属于破产债权( )

A．债权人甲公司因参加破产程序花费5万元

B．破产宣告时红日运输公司欠乙公司2万元；离偿付日期还有1个月

C．红日运输公司向银行贷款10万元，该项贷款以红日运输公司价值20万元的房产作为抵押

D．红日运输公司拖欠该市地方税务局税款5万元

比较李益七绝边塞诗与王昌龄同类诗歌的异同。