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【单选题】
80C51 的内部资源不包括: ( )A.
5个中断源
B.
2个全双工串行口
C.
8 位中央处理器
D.
片内振荡器和时钟电路
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反馈参考答案：
举一反三
【单选题】When you are worried about whether you are actually measuring what you think you are measuring, you are worried about __________.
A.
internal validity
B.
external validity
C.
reliability
D.
theory
E.
content reliability
【单选题】When you are worried about whether you will get the same results if you repeat your experiment again in the future, you are worried about _________.
A.
internal validity
B.
external validity
C.
reliability
D.
theory
E.
content validity
【单选题】When you are worried about whether you are actually measuring what you think you are measuring, you are worried about __________.
A.
internal validity
B.
external validity
C.
reliability
D.
theory
E.
content reliability
【单选题】下列属于遗传性溶血性贫血的是:
A.
阵发性睡眠性血红蛋白尿
B.
冷凝集素综合征
C.
葡萄糖-6-磷酸脱氢酶缺陷症
D.
自身免疫性溶血性贫血
E.
心源性溶血性贫血
【单选题】下列属于遗传性溶血性贫血的是
A.
微血管病性溶血性贫血
B.
阵发性睡眠性血红蛋白尿
C.
自身免疫性溶血性贫血
D.
ABO血型不合所致溶血性贫血
E.
葡萄糖-6-磷酸脱氢酶缺陷
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