省、自治区、直辖市旅游饭店星级评定机构承担推荐五星级饭店的责任。
参考答案:对
— How could you ______ my sister so easily in the crowd?
— Because she stood out in her red dress.
A.pick up
B.pick out
C.take up
D.take out
血细胞比容是指血细胞( )
A.占全血容积的百分比
B.占全血质量的百分比
C.与血清容积之比
D.与血管容积之比
E.与血浆容积之比