单项选择题

准备进行骨髓移植的患者需要输血改善贫血症状，首选的血液制品为
A．全血
B．红细胞悬液
C．少白细胞的红细胞
D．洗涤红细胞
E．浓缩红细胞

你可能感兴趣的试题

多项选择题

Which of the following were the changes that sound had brought to movies and their directors? (multiple answers

A． It allowed for a more concise and complex narration.
B． It allowed for a higher-level representation and recreation of reality.
C． Directors could use the dialogues and other sound resources to highlight the scene and transit between the scenes.
D． More freedom had been provided to the directors whether in narration or in expression of ideas.

单项选择题

为实现将JK触发器转换为D触发器，应使_____。