【多选题】
A <{p}><{font _mstmutation="1" _msttexthash="14800864" _msthash="1967"}>传播范围广<{/font}><{br/}><{/p}>
B <{p}><{font _mstmutation="1" _msttexthash="8930025" _msthash="1948"}>强迫性<{/font}><{br/}><{/p}>
C <{p}><{font _mstmutation="1" _msttexthash="12939784" _msthash="1920"}>方便统计<{/font}><{br/}><{/p}>
D <{p}><{font _mstmutation="1" _msttexthash="8744216" _msthash="1921"}>经济性<{/font}><{br/}><{/p}>
E <{p}><{font _mstmutation="1" _msttexthash="7728877" _msthash="1972"}>实时性<{/font}><{br/}><{/p}>
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