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【单选题】
对于游程编码而言,图形复杂程度与压缩比的关系为A.
图形越简单，压缩比越高
B.
图形越简单，压缩比越低
C.
图形越复杂，压缩比越高
D.
二者之间无关
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【单选题】听力原文：W: Air pollution is one of the most serious problems in the world. Polluted air can make us sick or even kill us. Why isn't more done to stop it? M: Everyone wants to stop it, but it is a difficu...
A.
Most people don't think it is a serious problem.
B.
Most of our pollution is caused by things people need.
C.
The government has not spent enough money to stop it.
D.
The seriousness of pollution has not been realized by the government.
【单选题】They regard ______ as their duty to provide the best service for their customers.
A.
this
B.
what
C.
it
D.
that
【简答题】求 0.05 mol∙dm -3 KHC 2 O 4 溶液的 pH ,如果加入等体积的 0.1 mol∙dm -3 K 2 C 2 O 4 溶液后,则溶液的 pH 又为多少 ? ( K a1 ө = 5.9 × 10 -2 , K a2 ө = 6.4 × 10 -5 )
【简答题】开户单位支付个人劳务报酬，可以支付现金。
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