混凝土外加剂试验要求，做膨胀剂试验用的养护箱应符合( )的要_爱下问搜题

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问题单项选择题

混凝土外加剂试验要求，做膨胀剂试验用的养护箱应符合( )的要求。

A．温度为15℃±5℃，相对湿度为50%±5%
B．温度为20℃±2℃，相对湿度为55%±5%
C．温度为20℃±3℃，相对湿度为60%±5%
D．温度为20℃±5℃，相对湿度为65%±5%

答案

参考答案：C

完形填空

选择最恰当的词，并用其正确形式填空，每词限用一次。

Phone, drive, thank, no ,unhappy, , on ,some, when, come back, mountain, quick, happy

It was Mother’s Day, Nancy was 800 miles away from her parents, so she was a little 1, In the morning she 2her mother to wish her a happy Mother’s Day, and her mother told her about the beautiful flowers in the garden. Later that day, 3 she told her husband about the flowers, he said, “ I know where we can find all that you want. Get our children Peter and Lily, and come on.” So they went, 4 down the country roads.
There on a 5 , they saw a lot of beautiful purple flowers. Nancy ran 6 to enjoy the flowers. Carefully, she picked a few here and a few there. And on their way home, there was a big smile 7 her face.
When they were passing a nursing home, she saw an old granny sitting in a chair. The granny had 8 children with her. They stopped the car and Nancy walked to the old woman, put the flowers in her hands, and smiled at her. The old granny 9 her again and again. She smiled happily, too.
When Nancy 10 to her car, her children asked her, “ Who is that old granny? Why did you give our flowers to her?”
“ I don’t know her.” Nancy said, “ But it’s Mother’s Day, and she is alone. But I have both of you, and I still have my mother. Just think how much those flowers meant to her.

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