问题
单项选择题
日立H－5000M系统，操作员站、值长站画面刷新率应达到正常值（）.
A.5秒/次
B.0.5秒/次
C.1秒/次
D.0.2秒/次
答案
参考答案：C
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日立H－5000M系统，操作员站、值长站画面刷新率应达到正常值（）.
A.5秒/次
B.0.5秒/次
C.1秒/次
D.0.2秒/次
参考答案：C
| 完形填空。 | ||||
| Miss Zhao is one of the most popular teachers in the school. Yesterday she came into the __1__with a big smile on her face. She said to her __2__that she was __3__to see they did well in the sports meeting. But __4__was not pleased to see the classroom last Saturday not as __5__as usual. She hoped they would clean the classroom every day .Wei Hua was on __6__yesterday. She said everyone was at __7__except Lin Tao. Then she told Miss Zhao about their __8__to the Great Wall last Sunday. Luckily the weather was__9__. The played games and had a picnic there. After Wei Hua __10_her talk, Miss Zhao began her lesson. | ||||
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