下列浇口会在制品上留下明显痕迹的是()
A、牛角式浇口
B、点浇口
C、直接浇口
D、潜伏浇口
参考答案:C
The state of Michigan now requires sports fans to make an annual ______ of $125 to $500 a seat to keep their end zone perches at Michigan Stadium.
A.tributary
B.attribution
C.contribution
D.distribution
个人贷款的保证人只能是自然人。