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【判断题】
南京城墙是我国现存最大型的、保存完整的城墙。A.
正确
B.
错误
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皮皮学刷刷变学霸
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【单选题】根据企业所得税法律制度的规定,下列关于企业所得税征收管理的说法正确的是()
A.
扣敏义务人每决代扣的税款,应当自代扣之日起15日内散入国库,并向所在地的极务机关报送扣微企业所得税报告表
B.
企业应当在办理注销登记后,就其清算所得向税务机关申报并依法缴销企业所得现
C.
企业纳税年度亏损,可以不向税务机关报送年度企业所得税纳税申报表
D.
企业清算时,应当以清算期间作为1个纳税年度
【单选题】The 10-cm radar as compared to a 3cm radar of similar specifications will___ __
A.
be more suitable for river and harbor navigation
B.
provide better range performance on low lying targets during good weather and calm seas
C.
have a wider horizontal beam width
D.
have more sea return during rough seas condition
【单选题】The 10-cm radar as compared to a 3-cm radar of similar specifications will_____
A.
be more suitable for river and harbor navigation
B.
provide better range performance on low lying targets during good weather and clam seas
C.
have a wider horizontal beam width
D.
have more sea return during rough sea conditions
【简答题】已知 DSB 系统的已调信号功率为 10kW ,调制信号 f(t) 的频带限制在 5kHz ,载频频率为 100kHz ,信道噪声双边带功率谱为 W/Hz ,接收机输入信号通过一个理想带通滤波器加到解调器。 ( 1 )写出理想带通滤波器传输函数的表达式; ( 2 )试求解调器输入端的信噪比; ( 3 )试求解调器输出端的信噪比。
【单选题】The 3-cm radar as compared to a 10-cm radar with similar specifications will ______.
A.
give better range performance in rain，hail，etc
B.
display small targets in a mass of dense sea clutter at a greater range
C.
have less sea return in choppy rough seas
D.
display a more maplike presentation for inshore navigation
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