题目:
输血的原则是( )
A.输入O型血
B.确定输入血量
C.输入同型血
D.输入AB型血
答案:
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小题1:B小题2:C小题3:B小题4:A小题1:主旨大意题。由可知Popular music in America is what every student likes. One is called folk (民间) music. Another is called western or country ...