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【单选题】
巨幼细胞贫血的确诊方法有:A.
胃液内因子测定
B.
补充叶酸、 VitB12 ，观察网织红细胞变化
C.
骨髓细胞学检测
D.
血清叶酸、 VitB12 检测
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【简答题】一线性电路含有两个大小分别为Us1和Us2的直流电压源和一个大小为Is的直流电流源,当Us1=5V,Us2=8V,Is=3A时,电路中某支路电流I=2A;Us1=-5V,Us2=-4V,Is=-2A时,该支路电流I=4A;Us1=-5V,Us2=0V,Is=1A时,该支路电流I=2A;则Us1=1V且单独作用时,I=( )A;Us1=2V,Us2=0V,Is=1A时,I=( ...
【简答题】日本血吸虫病的病理变化主要是由什么引起的（）
【简答题】一线性电路含有两个大小分别为Us1和Us2的直流电压源,当Us1=10V单独作用时,电路中某支路电流I=2A;当Us2=-4V单独作用时,该支路电流I=4A;则当Us1=10V,Us2=-4V共同作用时,该支路电流I=( )A;当Us1=5V,Us2=4V共同作用时,该支路电流I=( )A。
【简答题】1.On bright
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【判断题】"Is he living or is he dead?" is a frame-story. The author tries to insert another story into the story.
A.
正确
B.
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【单选题】What does the speaker imply when he says this: "If the search is too dangerous or they don't find enough food, many of these animal populations will decrease. This will also have a negative impact on ...
A.
People in those areas may have to change their way of living.
B.
Local people have a negative impact on the environment.
C.
Most animals in the Arctic region are endangered species.
D.
Hunting is not allowed in most parts of the Arctic.
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