不属于建设工程勘察合同内约定由发包人负责保证勘察工作顺利开展应提供的条件是( )。
A.修好通行道路
B.接通电源水源
C.挖好排水沟渠
D.测绘地形图
参考答案:D
The large elephant _______ many elephants _______ looking for food for dinner. [ ]
A. and, is
B. but, are
C. with, is
D. with, are
自主控制元件