问题
单项选择题
НМ109密封剂的配制、施工应在环境温度为15℃～30℃，环境的相对湿度为（）的条件下进行。
A.10％～20％
B.20％～40％
C.20％～80％
D.30％～70％
答案
参考答案：D
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НМ109密封剂的配制、施工应在环境温度为15℃～30℃，环境的相对湿度为（）的条件下进行。
A.10％～20％
B.20％～40％
C.20％～80％
D.30％～70％
参考答案：D
Mr. White was holding a party at home to celebrate his sixtieth birthday. To make him happy, one of his women friends __1__ to sing a song for him. Now she was singing. One guest turned to a __2__ by his side and criticized the singer. “What a __3__ voice!" he said. "Do you know __4__ she is?" “Yes," was the answer, " She is my wife. " “Oh, I beg your pardon,” the man said. "Of course her voice isn't bad, __5__ the song is very bad. I wondered who wrote that awful song?” “I did," was the answer.
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