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【单选题】
以下哪项不符合数据通信业务的特征？（）A.
通信是由计算机或数字设备参与
B.
数据通信需要严格的通信协议
C.
数据通信的传输速率高（比较话音通信）
D.
数据通信对误码率要求相对语音来说要低
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Let us consider the development of _____ across the life span as a substantive ( 重要的 ) example.
A.
intelligent
B.
intelligence
C.
intelligible
D.
intellectuals
【单选题】Let us consider what science and technology have to contribute to the food problem. The simplest way to increase food production, one might suppose, is to bring more land 【C1】______ cultivation and pu...
A.
under
B.
of
C.
by
D.
in
【单选题】Before trying to solve the puzzle , let us consider the best way to ________ it .
A.
analyze
B.
understand
C.
approach
D.
study
【简答题】A. attack B. primitive C. approach 10. Before trying to solve the puzzle, let us consider the best way to _____ it.
【单选题】关于行星齿轮变速机构的表述，说法错误的是()
A.
四挡自动变速器有两个行星齿轮排
B.
汽车自动变速器采用的行星齿轮机构大都是由辛普森式双排行星齿轮机构或拉维奈尔赫式复合行星齿轮机构组成
C.
行星齿轮变速机构有辛普森式、拉维娜式和阿里森式等
D.
行星齿轮机构是指在齿轮机构中，至少有一个轴线可以绕共同的固定轴线转动的齿轮机构
【简答题】Let us consider the case of a ball being whirled(旋转) at the end of a string(细绳).
【单选题】Let us consider what science and technology have to contribute to the food problem. The simplest way to increase food production, one might suppose, is to bring more land【B1】cultivation and put more p...
A.
under
B.
of
C.
by
D.
in
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