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【单选题】
声音和视频信息在计算机的表现形式是( )A.
二进制数字
B.
调制
C.
模拟
D.
模拟或数字
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
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皮皮学刷刷变学霸
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【简答题】C Arthritis, stroke, osteoporosis(骨关节炎), heart disease and dementia are what we’ve got to look forward to in old age. But conditions like these don’t have to be impossible to avoid, says New Zealand c...
【单选题】What is the English translation for 骨折愈合
A.
healing of fractures
B.
healing of osteoarthritis
C.
healing of osteoporosis
D.
healing of ligaments
【单选题】— Do Lucy and Lily have long hair? — Yes, they do. But Maria _____ long hair. [ ]
A.
don't have
B.
doesn't have
C.
has
D.
doesn't has
【简答题】混凝土的强度等级是按照什么来划分的？
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