题目内容

某土样进行直剪试验，在法向应力为100kPa、 200kPa 、300kPa、 400kPa时，测得抗剪强度τf分别为52kPa、83kPa、 115kPa、 145kPa, 试求:①该土的抗剪强度指标c和φ②如果在土中的某一平面上作用的法向应力为260kPa,剪应力为92kPa,该平面是否发生剪切破坏（）？

A. c=21kPa，φ=17.3°，破坏
B. c=15kPa，φ=24.6°，破坏
C. c=21kPa，φ=17.3°，不破坏
D. c=15kPa，φ=24.6°，不破坏

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某土样径向三轴固结排水试验，测得士的抗剪强度指标c=20kPa，φ=18°，对应大主应力σ1=480kPa，求土体剪切破坏面上的法向应力和剪应力接近（）？

A. 206.2kPa，143.8kPa
B. 252.3kPa，133.7kPa
C. 312.6kPa，121.6kPa
D. 355.9kPa，101.5kPa

The ___ rules are the rules that group words and phrases to form grammatical sentences.

A. lexical
B. morphological
C. linguistic
D. combinational

In English syntactic analysis, four phrasal categories are commonly recognized and discussed, namely, noun phrase, verb phrase, infinitive phrase, and auxiliary phrase.

A. 对
B. 错

What is actually internalized in the mind of a native speaker is a complete list of words and phrases rather than grammatical knowledge.

A. 对
B. 错