试问:软弱下卧层土在其顶面处修正后的天然地基承载力特征值(kPa),与下列何项数值最为接近?
A. 190
B. 200
C. 230
D. 310
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如病人出现声音嘶哑,提示肿瘤已侵犯
A. 气管隆突
B. 声带
C. 迷走神
D. 喉返神经
Which of the following perks is out-of-date today?
A. a workshop on the recent stock market.
B. an expensive car room that can be used at a relatively low rent.
C. a vacation to a beautiful scenic spot for relaxation.
D. a training on the expertise which may lead to promotion in career.
与基本分析相比,技术分析对市场的反映比较直观,分析结论时效性较强。 ()
A. 正确
B. 错误
A research scientist wants to study a certain attribute of dogs. It is estimated that approximately 5 percent of all dogs have this attribute. If the scientist wants to study a sample of N dogs having the attribute, approximately how many dogs should be screened in order to obtain the desired sample size?
A. N/5.
B. 5N.
C. 20N.
D. 105N.
E. 120N.