题目内容

要求设计用于砌筑砖墙的水泥混合砂浆配合比。设计强度等级为M7.5，稠度为70~90mm。原材料的主要参数，水泥：32.5级矿渣水泥；干砂：中砂，堆积密度为1450kg/m3；石灰膏：稠度120mm；施工水平：一般。

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要求设计用于砌筑砖墙的水泥砂浆，设计强度为M10，稠度70~90mm。原材料的主要参数，水泥：32.5级矿渣水泥；干砂：中砂，堆积密度为1400kg/m3；施工水平：一般。

8. What a nice day! How about the three of us ___________ a walk in the park nearby?

A. to take
B. take
C. taking
D. to be taking

9. ___________ should not become a serious disadvantage in life and work.

A. To be not tall
B. Not being tall
C. Being not tall
D. Not to be tall

10. Sandy could do nothing but ____________ to his teacher that he was wrong.

A. admit
B. admitted
C. admitting
D. to admit