题目内容
MIDI是一种数字音乐的国际标准，MIDI文件存储的(64)。它的重要特色是(65)。
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A．差别B．自顶向下C．白底向D．专家判定技术
A．用户B．静态C．动态D．系统
企业在提取法定盈余公积金和公益金前不得向投资者分配利润。 ()
In data communication, data link is those parts of two data terminal equipments that are controlled by a protocol along with the(71) data circuit, which together enable data(72). So-called protocol means, in short, a set of rules that determines the behavior. of functional units in achieving communication.Data circuit, however, consists of a pair of(73) transmission channels that provides a means of two-way data transmission. Between data switching exchanges, the data circuit may or may not include data circuit-terminating equipment (DCE), depending on the type of(74) used at the data switching exchange. Between a data station and a data switching exchange or data concentrator, the data circuit includes the DCE at the data station end, and may include equipment(75) to a DCE at the data switching exchange or dam concentrator location.
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