皮皮学，免费搜题
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搜题
【单选题】
体内铁缺乏时,最早的表现是
A.
贮存铁下降
B.
血清铁和运铁蛋白饱和度下降
C.
正细胞正色素性贫血
D.
小细胞低色素性贫血
E.
血清总铁结合力增高
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】CO2 对呼吸运动的调节作用主要通过刺激( )。
A.
颈动脉体和主动脉体化学感受器
B.
延髓呼吸中枢
C.
延髓化学感受器
D.
脑桥长吸中枢
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【单选题】标记链接图片的属性是
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B.
alt
C.
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D.
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【简答题】These e-books are not going to ____the printed books, because many people believe that paper books just feel good in their hands.
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【简答题】These e-books are not going to __________the printed books, because many people believe that paper books just feel good in their hands.A. replace
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【单选题】CO2对呼吸运动的调节作用主要是通过刺激
A.
主动脉体和颈动脉体化学感受器
B.
延髓化学感受器
C.
延髓呼吸中枢
D.
脑桥呼吸调整中枢
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【单选题】PC机中数字化后的声音有两类表示方式：一类是合成声音，一类是波形声音。下列后缀中属于合成声音文件后缀的是(266)。
A.
WAV
B.
MID
C.
RA
D.
MP3
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【单选题】标记链接图片的属性是:
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height
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width
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alt
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【单选题】PC机中数字化后的声音有两类表示方式：一类是波形声音，一类是合成声音。(24)是一种合成声音文件的后缀。
A.
WAV
B.
MID
C.
RA
D.
MP3
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【单选题】These e-books are not going to __________the printed books, because many people believe that paper books just feel good in their hands.
A.
replace
B.
unpleasant
C.
inform
D.
headline
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【单选题】These e-books are not going to ( )the printed books, because many people believe that paper books just feel good in their hands.
A.
have
B.
read
C.
replace
D.
sweep
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【单选题】CO2 对呼吸运动的调节作用主要通过刺激( )。
A.
颈动脉体和主动脉体化学感受器
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【单选题】标记链接图片的属性是
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主动脉体和颈动脉体化学感受器
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【单选题】PC机中数字化后的声音有两类表示方式：一类是合成声音，一类是波形声音。下列后缀中属于合成声音文件后缀的是(266)。
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【单选题】标记链接图片的属性是:
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【单选题】PC机中数字化后的声音有两类表示方式：一类是波形声音，一类是合成声音。(24)是一种合成声音文件的后缀。
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B.
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D.
MP3
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【单选题】These e-books are not going to __________the printed books, because many people believe that paper books just feel good in their hands.
A.
replace
B.
unpleasant
C.
inform
D.
headline
查看完整题目与答案
【单选题】These e-books are not going to ( )the printed books, because many people believe that paper books just feel good in their hands.
A.
have
B.
read
C.
replace
D.
sweep
查看完整题目与答案