设计概算文件一般应包括( )。
A.编制说明
B.封面、签署页及目录
C.总概算表
D.单项工程综合概算表
E.单位工程综合概算表
参考答案:A,B,C,E
五个数,x,y,z,5和7,他们的算术平均值(mean)等于8,问下面哪一个正确 (Ⅰ)The range of the five numbers is 2 or more. (Ⅱ)At least one of x,y,z is more than 9.
Private cars really provide much convenience to people, and ___ they cause too many problems.
A.meanwhile
B.therefore
C.otherwise
D.instead