问题
单项选择题
根据我国献血法，每人每年献血不超过2次，如果每个献血者每年献血2次（每次按献血一个单位计算），那么拥有50个急诊床位的医院需（）个献血者才能满足需要。
A.168
B.158
C.178
D.160
答案
参考答案：A
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根据我国献血法，每人每年献血不超过2次，如果每个献血者每年献血2次（每次按献血一个单位计算），那么拥有50个急诊床位的医院需（）个献血者才能满足需要。
A.168
B.158
C.178
D.160
参考答案：A
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