静态投资的估算一般以( )为基准年。
A．编制年
B．开工前一年
C．开工年
D．设计开始年份
参考答案：B
----_____he dropped out of school?
----His family has run into financial difficulties.
A．Why was it that
B．Why was that
C．Why was that it
D．Why was it
激光测距仪能够调出（）个测量值
A、5
B、8
C、10
D、15
