实验过程中处理因素作用的客体是()
A.处理因素
B.受试对象
C.实验效应
D.实验研究
E.混杂因素
参考答案:B
The doctor recommended that you swim after eating a large meal.
A wouldn't B couldn't C needn't D shouldn't
病人出下列情况,应诊断为重症SARS,该情况为()
A.高热,T>39℃
B.严重脱水
C.低氧血症
D.既往有低血压
E.合并牙龈炎