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【判断题】
协议可根据其不同特性进行分类,可分为直接型/间接型、单体型/结构化型、对称型/不对称型、标准型/非标准型等。A.
正确
B.
错误
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反馈参考答案：
举一反三
【多选题】以下哪种检索词能同时检索出tianjin university和university tianjin
A.
tianjin university
B.
tianjin AND university
C.
tianjin (W) university
D.
tianjin (N) university
【简答题】What is the determining factor in classifying whether a radio wave is a suce wave or a space wave?
【单选题】Which of the following is not the direct contributing factor to radio failure ____
A.
wrong frequency selected
B.
transponder failure
C.
receiver or transmitter inoperative
D.
adverse weather conditions
【单选题】In my opinion , Tianjin is not as expensive in price as Beijing but Tianjin is in traffic.
A.
the most organized
B.
more organized
C.
so organized as
D.
as organized as
【简答题】计算下列波形的幅度和频率(经探头接入): (1) V/div位于0.2挡, t/div位于2 μs挡。 H=2 div, D=3 div;
【判断题】Tianjin Radio Factory built the first black-and-white television set in China.
A.
正确
B.
错误
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