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【多选题】
数据库的分类有( )。A.
层次数据库
B.
环形数据库
C.
关系数据库
D.
面向对象数据库
拍照语音搜题，微信中搜索"皮皮学"使用
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举一反三
【单选题】\"Sleeping like a dormouse\" most probably meansA．sleeping longer on cold
A.
/"Sleeping like a dormouse/" most probably means A．sleeping longer on cold days.
B.
sleeping badly.
C.
sleeping with a lower heartbeat rate.
D.
sleeping with little breathing.
【单选题】'Sleeping like a dormouse' most probably means
A.
sleeping longer on cold days.
B.
sleeping badly.
C.
sleeping with a lower heartbeat rate.
D.
sleeping with little breathing.
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