CRD法是在CD工法基础上增设()，即所谓的交叉中隔壁法。
A.临时仰拱
B.超前小导管
C.管棚
D.钢拱架
参考答案：A
下列各组词语中没有错别字的一项是：
A．打烊贸然颠扑不破出奇不意
B．蝉联伸张见微知著老生常谈
C．荟萃招徕辞不达意芒刺在背
D．宣泄通牒惹是生非看风驶舵
Life expectancy among adults 45 and 65 years of age by family income, sex, and race: United States, average annual 1979-89
A sequence of numbers begins 1, 1, 1, 2, 2, 3 and then repeats this pattern forever. What is the sum of the 135th, 136th, and 137th numbers in the sequence
