下列哪种化脓性脑膜炎脑脊液细菌检出率最高（） A.脑膜炎双球菌脑膜炎 B.大肠杆菌脑

(12分)利用如下图的装置来做下面的实验：

(1)先在玻璃容器里盛半杯Ca(OH)₂溶液，然后由导管向容器溶液里通入CO₂气体。随着CO₂的通入，电灯就渐渐变暗，通入一定量时，电灯几乎完全熄灭，原因是 __________________________              ，如果继续通入CO₂气体，电灯又会逐渐亮起来，原因是__________________________                   。在通入CO₂的同时，能观察到溶液发生的现象是________________________                      ，有关反应的离子方程式为_________________________                              。

(2)如果用氯化氢气体代替CO₂气体，则观察到灯泡亮度变化是_________     。有关离子反应方程式____________                               。

单词拼写。根据下列句子及所给单词的首字母写出各单词的完全形式(每空限填一词)。

1. As we know, Thursday is the f_____ day in a week.

2. The shortest month of the year is F_____.

3. Yao Ming is r_____ as the greatest basketball player in China.

4. Thomas Edison was one of the greatest i_____ in the world.

5. My brother p_____ soft music to loud music.    

6. Nothing in the world is i_____ if you put your heart into it.So keep on trying.

7. I have been rather busy these days, I h_____ ever have time to have a rest.

8. On sunny night, m_____ of stars are shinning in the sky.  

9. Xianshan People's Square looks very beautiful at night, e_____ with all lights on at night.

10. Ted's mother kept t_____ Ted not to watch TV for so long,but it didn't help.

当墩台基础为坚硬岩层时，检测无铰拱梁桥最大挠度时，其检测设备应安装在( )。

A．拱顶截面

B．1/4截面

C．1/8截面

D．3/8截面

通常以一个字节来存放一个标准ASCII字符,其中实际只用______位对字符进行编码。