实心砖墙的( )组砌方式常用于清水砖墙。
A.一顺一丁式
B.两平一侧式
C.十字式
D.多顺一丁式
参考答案:D
__________I know the money is safe,I shall not worry about it.
A.Even though
B.Unless
C.As long as
D.While
简述释前教育的必要性。