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【简答题】
试解释以下名词:数据,信号,模拟数据,模拟信号,基带信号,带通信号,数字数据,数字信号,码元,通信, xx 通信, xx 通信,串行传输,并行传输。
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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】男性,10岁,小学四年级学生,上课坐不住,不时扭动身体,或离开座位,干扰邻座同学听课,做课间操不按顺序排队,话多,大声喧哗,学习成绩不好。首先考虑的诊断是
A.
童年社交焦虑障碍
B.
Tourette综合征
C.
Klinefelter 综合征
D.
ADHD （注意缺陷多动障碍）
【简答题】脱式计算（怎样算简便就怎样算）． （18.6-18.6÷3.1）×1.6 12.5×2.5×3.2 4.5÷18 32.9×0.46+5.4×3.29．
【简答题】I r______ him at the first sight when he called on me.
【简答题】What is the following word when it is unscrambled? N G O R E R T S
【简答题】病例 2: 男性, 10岁,小学四年级学生,上课坐不住,不时扭动身体,或离开座位,干扰邻 座同学听课,做课间操不按顺序排队,话多,大声喧哗,学习成绩不好。
【单选题】To paraphrase 18th-century statesman Edmund Burke, 'all that is needed for the triumph of a misguided cause is that good people do nothing.' One such cause now seeks to end biomedical research because...
A.
call on scientists to take some actions
B.
criticize the misguided cause of animal rights
C.
warn of the doom of biomedical research
D.
show the triumph of the animal rights movement
【单选题】The bodies of Burke's and Hate's victims couldn't be found by the police because
A.
they had been stolen.
B.
they had been strangled.
C.
they had been dissected.
D.
they had been buried.
【单选题】Burke工业公司有一项正在与银行协商的信贷计划，该计划使得Burke以9%的年利率最多向银行借款$5,000,000，利息按月支付。但Burke必须为该额度下未使用的资金部分按月支付0.25%的佣金给银行。Burke在4月1日有$2,000,000的现金余额，在不违背这一信贷条约的条件下，在4月份有净现金流入 $2,000,000，5月份有净现金流出$7,000,000，6月份有净现金流入$4,...
A.
$47,700
B.
$52,600
C.
$60,200
D.
$62,500
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