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【单选题】
在JPEG中使用了哪两种熵编码方法( )A.
统计编码和算术编码
B.
PCM编码和DPCM编码
C.
预测编码和变换编码
D.
哈夫曼编码和自适应二进制算术编码
E.
D
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举一反三
【单选题】— I ______ have turned on the air conditioner at such a low temperature. — No wonder you've got a cold. [ ]
A.
shouldn't
B.
couldn't
C.
mustn't
D.
needn't
【单选题】用氧化还原发测得某试样中铁的质量分数为: 20.01%,20.03%,20.04%,20.05%,分析结果的标准偏差为
A.
1.479E-4
B.
1.48E-4
C.
1.5E-4
D.
1.7E-4
【多选题】What are the qualities for a marketing assistant ?
A.
Have at least two-year work experience in this field.
B.
Speak fluent English.
C.
Be able to work under pressure.
D.
Have good communication skills.
E.
Love children
【单选题】The banking has long been the _____ of the region’s crony capitalism.
A.
obstacle
B.
holdback
C.
cornerstone
D.
hindrance
【单选题】After a long walk at the Disney park, I want to have_____to drink.
A.
any cold thing
B.
cold something
C.
something cold
D.
anything cold
【简答题】若一棵度为 4 的树中度为 1 、 2 、 3 、 4 的节点个数分别为 4 、 3 、 2 、 2 ,则该树的总节点个数是多少?
【单选题】—where are you going, Tom? —I have a ______. I want to see a dentist. [ ]
A.
throat
B.
toothache
C.
cold
D.
fever
【单选题】听力原文：W: Have you ever seen so much snow in your life? M: I'm just tired of all this cold. How I envy those guys in Florida! Q: What is being discussed? (10)
A.
Florida.
B.
Holiday in Florida.
C.
The man's friends in Florida.
D.
Weather.
【单选题】用氧化还原发测得某试样中铁的质量分数为:20.01%,20.03%,20.04%,20.05%,分析结果的标准偏差为
A.
0.01479%
B.
0.0148%
C.
0.015%
D.
0.017%
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