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问题 单项选择题

对于终期堆积（）的坡比，可通过试验或稳定分析计算后确定

A.内破

B.外坡

C.滩高

答案

参考答案：B

填空题

网络安全环境由3个重要部分组成，它们是【 】、技术和管理。
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单项选择题

A painter has painted one-third of a rectangular wall which is ten feet high. When she has painted another 75 square feet of wall, she will be three-quarters finished with the job. What is the length (the horizontal dimension) of the wall

A．18 feet

B．12 feet

C．10 feet

D．9 feet

E．(E) 6 feet
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