搜题请搜索小程序“爱下问搜题”
问题 多项选择题

下列关于建设工程投资效益最大化含义的说法中，正确的是( )。

A．在满足建设工程投资控制要求的前提下，建设投资额最少

B．在满足建设工程预定功能和质量标准的前提下，建设投资额最少

C．在满足建设工程预定功能和质量标准的前提下，使用费用最少

D．建设工程本身的投资效益与环境、社会效益的综合效益最大化

E．在满足建设工程预定功能和质量标准的前提下，建设工程寿命周期费用最少

答案

参考答案：B,D,E

阅读理解

It seems to be strange to you there is a blind spot(点) on the eyes. Here is an interesting experiment that can make something disappear, when one eye is open.

　　Make a card about the size of a postcard and write two English letters L and R on it, L on the left and R on the right. First, hold the card about 80 cm away and you see both the letters. Then close your right eye and look at the letter R only with your left eye. And now, as you move the card slowly towards you, you’ll find the letter L disappearing. But if you move the card nearer to your face, the letter will be seen again. Now do the same experiment with your left eye closed, you’ll find the letter R disappearing.

Why does the letter disappear? It is because there is a blind spot on the eye. When the image of the letter falls on the blind spot, it won’t be seen. That is why either of the letters disappears.

小题1:The writer of the passage thinks that _____ there is a blind spot on the eye.

A．few people know

B．no one knows

C．most people know

D．all the people know小题2:In which order should you do the experiment?

①Hold the card  ②Move the card nearer   ③Close your right eye

④Write two English letters  ⑤Look at the letter R   ⑥Make a card

A．④⑥①②③⑤

B．①③⑥④⑤②

C．⑥①④③②⑤

D．⑥④①③⑤②小题3:The passage mainly tells us _______.

A．how to find the blind spot

B．an interesting experiment

C．where the blind spot is

D．there is blind spot on the eye
查看答案
判断题

MS是环境因素作用而发生的自身免疫过程。
查看答案