下列不可按物品类国内特快专递邮件寄递的是()。
A、毛绒玩具
B、帽子
C、空白报表
D、衬衫
参考答案:C
当数据库的存储结构改变时,可相应修改 【6】 ,从而保持模式不变。
If our car had not ________, we would have been here on time.
A.broken out
B.broken into
C.broken away
D.broken down