桥枕安装时，桥枕底面与钢梁联结系间隙大于（）。
A.lmm
B.3mm
C.5mm
D.10mm
参考答案：B
It is in this very village, where Lily was born 30 years ago____ she will build her first art school, ____ involves many people to help her.
A．that; where
B．which; that
C．that; which
D．where; which
下列不是黑变病的诱发因素的是（）
A.遗传
B.接触沥青
C.化妆品
D.营养不良
E.内分泌紊乱
