皮皮学，免费搜题
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【简答题】
按交换方式来分类，计算机网络可分为报文交换网、分组交换网和______。
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
【单选题】Those Americans who participate in public discussions about the church-state issues believe that
A.
these issues have nothing to do with America's fate
B.
these issues have close relationship with America's destiny
C.
these issues have indirect relationship with America's future
D.
these issues have immediate relationship with America's present
【简答题】expansion(v及意思)
【单选题】Those Americans who participate in public discussions about the church -state issues beileve that _____
A.
these issues have nothing to do with America's fate
B.
these issues have close relationship with America's destiny
C.
these issues have indirect relatiosnhip with America's future.
D.
these issues have immediate relatiosnhip with America's Present.
【简答题】饺子用小麦粉（flour for dumpling）
【单选题】下列各组分子或离子中,不属于共轭酸碱关系的是( )
A.
HCl-Cl -
B.
H 2 CO 3 -CO 3 2-
C.
H 2 CO 3 -HCO 3 -
D.
NH 4 + -NH 3
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