贫血的诊断步骤不包括()。
A.了解贫血的程度
B.判断贫血的类型
C.先用铁剂治疗
D.了解贫血的原因
E.查明原发病
参考答案:C
用MCS-51串行口扩展并行I/O口时,串行口工作方式应选择方式()。
A midday nap can not only ________ brain to its full awakeness best but also raise brain power beyond what it would have been without some shuteye.
A.accumulate
B.reserve
C.approve
D.restore