问题
单项选择题
自给正压式空气呼吸器，其供气阀的安装方法为：将供气阀上的红色旋钮置于12点钟的位置，确认其接口与面罩合，然后沿顺时针方向旋转（），当听到咔嚓声及安装完毕.
A.45℃
B.90℃
C.180℃
答案
参考答案：B
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自给正压式空气呼吸器，其供气阀的安装方法为：将供气阀上的红色旋钮置于12点钟的位置，确认其接口与面罩合，然后沿顺时针方向旋转（），当听到咔嚓声及安装完毕.
A.45℃
B.90℃
C.180℃
参考答案：B
| 阅读理解。 | ||||||
| ||||||
| 1. How many important events did they talk about? | ||||||
| A. Six. B. Four. C. Three. D. Five. | ||||||
| 2. When the earthquake happened, Ted was ________. | ||||||
| A. waiting at the station B. walking in the park C. visiting his grandpa in the hospital D. having dinner | ||||||
| 3. ________ was chatting in the living room when the opening ceremony of the Olympic Games began. | ||||||
| A. Nicole B. Kathy C. Alice D. Jackson | ||||||
| 4. China's "Shenzhou Ⅶ" spacecraft returned successfully (成功地) on ________. | ||||||
| A. September 28th, 2008 B. August 26th, 2005 C. October 17th, 2005 D. August 8th, 2008 | ||||||
| 5. Which of the following is true? | ||||||
| A. The Wenchuan earthquake happened in our country in 2007. B. Kathy was playing chess when the opening ceremony of the Olympic Games began. C. The opening ceremony of the Olympic Games began on the morning of August 8, 2008. D. When Shenzhou Ⅶ spacecraft returned, Erin was excited. |