If two phonetically similar sounds are two distinctive phonemes,they are said to form a_______.
甲借用乙的平房居住。后平房漏雨,甲联系不到乙,遂委托丙维修并依承诺向丙支付维修费。本案中,甲请求乙偿还维修费的依据是什么?( )
代理行为
委托合同
无因管理
单方允诺
If two phonetically similar sounds are two distinctive phonemes,they are said to form a_______.
关于个人经营类贷款,下列说法错误的是( )。
下列建筑中,自动喷水灭火系统设置场所的火灾危险等级为中危险级Ⅱ级的是( )。