男子"天癸"产生的年岁在（）
A.八岁
B.二八
C.三八
D.四八
E.八八
参考答案：B
注浆作业宜于成桩2d后开始，不宜迟于30d后。
An analyst does research about methods of distributing new government securities. Which of the following is the regular way for U. S. government to issue U. S. Treasury securities（）
A. Tap method.
B. Regular auction cycle/single price method.
C. Regular auction cycle/multiple price method.
