Her clothes were too()for the occasion.
A.relaxed
B.casual
C.indifferent
D.flexible
参考答案:B
桥墩墩顶弹性水平位移验算的目的是()。
包装月饼时,常使用铁粉放入包装中,而包装米饼,雪饼时却采用生石灰,为什么?