患者，女；36岁。突发眼睑及四肢浮肿，肿势迅速，肢体酸重，尿少，恶风寒，舌苔薄白，脉

下列事件中是必然事件的是（　　）

A．经过城市中某一有交通信号灯的路口，恰好遇到红灯

B．抛掷一枚硬币，落地后正面朝上

C．长为5cm、5cm、1km的三条线段能围成一个三角形

D．a是实数，|a|≥0

根据语篇内容，用方框中所给词的正确形式填空，使短文通顺、连贯。方框中有两个词为多余项。

Years ago, I lived in a house in a large city. The house next door was only a few meters away from   小题1:. Through the window, I could often see a woman   小题2:  I had never met doing some reading in the house every afternoon.

Several   小题3:  went by, I began to notice that her window was dirty. Everything was not very clear through the dirty window. 1 wondered why the woman didn't wash her window, it 小题4:  looked terrible.

One bright morning, I decided to clean my house, including   小题5: the window inside.  Late in the afternoon when I finished all the cleaning, I sat down by the window with a cup of coffee for a rest. How   小题6:! I found that the woman's window was actually so clean that she could  小题7: clearly sitting by the window.

That was quite an   小题8: lesson for me. How often had I looked at others through my own shortcomings (缺点) !

Since then, I  小题9: used to asking myself whether I am looking through my own dirty window. Before I want to judge (判断) someone, I always think   小题10: than before and try to clean the dirty window so that I may see the world around me more clearly.

反击式破碎机的反击板的结构形式是影响破碎机破碎（）的重要因素。

什么是理论板？

板式的悬挑钢平台，无立柱支撑，一边搁置于建筑柳楼层的边沿由于是悬挑的平台的受荷较大，故不得用（）

A.钢管

B.槽钢

C.工字钢

D.方管