比一比,再组词。
说( ) 明( ) 友( )
话( ) 朋( ) 有( )
说话 明天 友好
讲话 朋友 没有
(答案不唯一)
We were sad to know that about 30 kids had been killed in Sandy Hook, Newtown, the USA ____ December 14, 2012.
A.in
B.at
C.on
D.by
盘型抱闸闸块应齐全、无裂纹、无破损,无油污。磨损余厚不得小于(),松闸间隙应大于()。
A.1mm,20mm
B.2mm,25mm
C.4mm,35mm