This hat is too . My is stuck. [ ]
A. small, hand
B. big, head
C. small, head
答案:C
一般情况,河流布设取样断面在拟建排污口上游()处应设置一个。
A.500m
B.400m
C.300m
D.200m
通常情况,下列用品中属于导体的是[ ]
A.玻璃杯
B.陶瓷碗
C.塑料筷子
D.金属勺