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【简答题】
在数字电路中,若ABC=ADC,则B=D。
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皮皮学刷刷变学霸
举一反三
【单选题】A compact disk (CD) is used to store music. Suppose that both the two independent channels of the true stereo music with the highest frequency 22.05 kHz are sampled at the Nyquist sampling rate, then ...
A.
f=44.1, R=16, T=783
B.
f=22.05, R=16, T=392
C.
f=44.1, R=15, T=700
D.
f=44.1, R=16, T=392
【单选题】For a combined FDM / TDM system, if the channel is divided into F sub bands and the time is divided into T slots, then the channel will be able to support f t ______concurrent calls.
A.
F
B.
T
C.
F+T
D.
F·T
【简答题】Suppose that Tang and Wilson must split a fixed 400 pounds of food between them. Tang’s utility function is U T = sqrt ( F 1 ) and Wilson’s utility function is UW = 1⁄2 sqrt ( F 2 ), where F 1 and F 2...
【简答题】Read the text and mark the statements T (true) or F (false). If graffiti is the art of today's streetwise agers, then skateboarding is their sport. Skateboarding has never been more popular.There ...
【简答题】vlan技术可以实现不同工作组(虚拟局域网vlan)之间隔离,把广播帧和单播帧都隔离了。实际需要隔离的是( )帧,不需要隔离( )帧。通过路由技术实现不同网络之间( )帧互通。三层交换机端口一般作为( )端口,此时交换机级联端口设置( ),然后创建下联二层交换机相应的VLAN,并配置该Vlan(虚接口)的地址,开启( )功能。
【单选题】以下关于实体税制和程序税制的说法中错误的是( )。
A.
程序税制不会改变实体税制的具体内容，也不会影响纳税义务的确定和实现方式。
B.
程序税制和实体税制不是截然可分的。
C.
我国现有实体税制包含 18 个税种，是政府所掌握的 18 个筹资和调控工具。
D.
一个国家的税制改革基本上就是实体税制的变革。
【简答题】L ook at the following utterances, then decide which involve gesturally deictic expressions and which involve symbolically deictic expressions. 下面各句中哪些指示语是手势用法,哪些是象征用法 a. This city is really beautiful...
【简答题】组建虚拟局域网需要__________设备。
【单选题】1 Listening for Specific Information Listen to the recording. While you are listening, fill in the blanks with T if the statements are true or F if they are false. Then compare your answers with those...
A.
true
B.
false
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