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【简答题】
假设一信道带宽为4kHz,信道若要达到24kb/s的传输速率,问: (1)按奈奎斯特公式,需要多少个电平表示数据? (2)按香农公式,信道的信噪比是多少倍? 请写出详细的解题步骤
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参考答案：
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【多选题】波特产业竞争力五力模型中的竞争力量包括：现有竞争对手间的竞争和( )。
A.
买方议价能力
B.
进入威胁
C.
行业获利能力
D.
替代品威胁
E.
供方议价能力
查看完整题目与答案
【单选题】It is a good restaurant, and ____cheap.
A.
incredibly
B.
incredit
C.
incredible
D.
incredited
查看完整题目与答案
【单选题】. The bicycles in the other shops will be _____but _____. A. cheaper, not as good B. more cheap, not as better C. cheaper, not as better D. more cheap, not as good
A.
cheaper, not as good
B.
more cheap, not as better
C.
cheaper, not as better
D.
more cheap, not as good
查看完整题目与答案
【单选题】波特的竞争环境五因素分析法中,潜在竞争对手的威胁不包括( )。
A.
规模经济
B.
原始资本需求壁垒
C.
产品差异性壁垒
D.
固定成本的高低
查看完整题目与答案
【单选题】通过企业的战略或战略意图,向竞争对手宣布本企业的竞争意愿和决心以及相应将采取的竞争性行动,以期造成对竞争对手的威胁。从这个角度可以将战略理解为( )。
A.
计划
B.
计谋
C.
模式
D.
观念
查看完整题目与答案
【判断题】判断口吐鲜血,如果血中夹有泡沫,多为呕血,为血从胃而出的一种病症。
A.
正确
B.
错误
查看完整题目与答案
【简答题】As an illustration of this, the writer uses the fact that photographers can______with a computer program.
查看完整题目与答案
【单选题】I am Tom Miller. My first name is ________. [     ]
A.
Miller
B.
Tom
C.
Miller Tom
D.
Tom Miller
查看完整题目与答案
【单选题】Fran buys 1,000 shares of stock issued by Miller Brewing. In turn, Miller uses the funds to buy new machinery for one of its breweries.
A.
Fran and Miller are both investing.
B.
Fran and Miller are both saving.
C.
Fran is investing; Miller is saving.
D.
Fran is saving; Miller is investing.
查看完整题目与答案
【单选题】The government of Chongqing is building ________ cheap and good houses for the people.
A.
thousand
B.
thousands
C.
thousand of
D.
thousands of
查看完整题目与答案
相关题目：
【多选题】波特产业竞争力五力模型中的竞争力量包括：现有竞争对手间的竞争和( )。
A.
买方议价能力
B.
进入威胁
C.
行业获利能力
D.
替代品威胁
E.
供方议价能力
查看完整题目与答案
【单选题】It is a good restaurant, and ____cheap.
A.
incredibly
B.
incredit
C.
incredible
D.
incredited
查看完整题目与答案
【单选题】. The bicycles in the other shops will be _____but _____. A. cheaper, not as good B. more cheap, not as better C. cheaper, not as better D. more cheap, not as good
A.
cheaper, not as good
B.
more cheap, not as better
C.
cheaper, not as better
D.
more cheap, not as good
查看完整题目与答案
【单选题】波特的竞争环境五因素分析法中,潜在竞争对手的威胁不包括( )。
A.
规模经济
B.
原始资本需求壁垒
C.
产品差异性壁垒
D.
固定成本的高低
查看完整题目与答案
【单选题】通过企业的战略或战略意图,向竞争对手宣布本企业的竞争意愿和决心以及相应将采取的竞争性行动,以期造成对竞争对手的威胁。从这个角度可以将战略理解为( )。
A.
计划
B.
计谋
C.
模式
D.
观念
查看完整题目与答案
【判断题】判断口吐鲜血,如果血中夹有泡沫,多为呕血,为血从胃而出的一种病症。
A.
正确
B.
错误
查看完整题目与答案
【简答题】As an illustration of this, the writer uses the fact that photographers can______with a computer program.
查看完整题目与答案
【单选题】I am Tom Miller. My first name is ________. [     ]
A.
Miller
B.
Tom
C.
Miller Tom
D.
Tom Miller
查看完整题目与答案
【单选题】Fran buys 1,000 shares of stock issued by Miller Brewing. In turn, Miller uses the funds to buy new machinery for one of its breweries.
A.
Fran and Miller are both investing.
B.
Fran and Miller are both saving.
C.
Fran is investing; Miller is saving.
D.
Fran is saving; Miller is investing.
查看完整题目与答案
【单选题】The government of Chongqing is building ________ cheap and good houses for the people.
A.
thousand
B.
thousands
C.
thousand of
D.
thousands of
查看完整题目与答案
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