皮皮学，免费搜题
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【多选题】
人的需要的特点有()A.
社会性特征
B.
个性和共性特征
C.
不确定性特征
D.
选择性特征
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】根据所用基质的属性,可以将基质栽培再分为( )、( )、( )。
【单选题】Listen to the following dialogue, and then choose the best answer for the question. Q: What did the man mean?
A.
He wrote it last semester.
B.
He ' ll finish it in a few minutes.
C.
He isn ' t going to write it.
D.
He never does assignments early.
【单选题】Listen to the following dialogue, and then choose the best answer for the question. Q: What did the man mean?
A.
He hadn ' t been there.
B.
He didn ' t like it.
C.
He didn ' t care.
D.
He wasn ' t careful.
【单选题】Listen to the following dialogue, and then choose the best answer for the question. Q: What did the man mean?
A.
He wrote it last semester.
B.
He ' ll finish it in a few minutes.
C.
He isn ' t going to write it.
D.
He never does assignments early.
【简答题】通常根据网络范围和计算机之间的距离将计算机网络分为 、 和
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