皮皮学，免费搜题
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【单选题】
互联网的主要硬件设备有中继器、网桥和( )。A.
集线器
B.
网卡
C.
网络适配器
D.
路由器
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】吸收光谱曲线是：
A.
物质的吸光度随浓度的变化而变化的关系曲线
B.
吸光物质的浓度随透光度的变化而变化的关系曲线
C.
物质的吸光度随入射光波长的变化而变化的关系曲线
D.
物质的吸光度随吸光物质溶液厚度的变化而变化的关系曲线
【单选题】Do you often feel the quality of the goods we buy these days isn't as good as it ought to be? In the past, when things were made by hand, it seems there was a lot of pride in individual workmanship. P...
A.
workmanship now can not be found as it was in the past
B.
the toaster was broken because Mary used it too much
C.
the quality of goods now isn't as good as it was
D.
it is fair enough for the store not to give money back to Mary
【简答题】下列报表属于资产负债表附表的是（ ）。
【简答题】图中虚线内部件由___和___阀体组成。
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