【单选题】基础处理后常常需要钻一定数量检查孔,这些检查孔工程量称为( )。
【判断题】在锅炉定期检验,司炉工应打开锅炉上所有的人孔、手孔、检查孔,使锅炉得到充分冷却和通风
【多选题】固结灌浆效果检查的主要方法常用的有( )。
【简答题】Fill the blanks. Psychologically there are two ers to be guarded ____________ (1) in old age. One of these is too great an absorption in the past. One should not live in memories, in regrets (2) ...
【简答题】求下列各式中的x的值. (1)25x 2 =9 (2)(x-1) 3 =8.
【简答题】分别求下列方程中x的值: (1)9 x =27 (2) .
【单选题】Mathers prefers the flat rate tax probably because______.
A.
it is fair and easy to figure out
C.
it is more applicable than the progressive rate for him
【简答题】求下列各式中的x的值: (1)9x 2 =16 (2)(x-1) 3 =.
【简答题】求下列各式中的x的值:(1)x 2 =9 ;(2)(x-1) 3 =-8