某因素既与疾病有联系,又与暴露有联系,由于该因素的存在所引起的偏倚称为()。
A.信息偏倚
B.混杂偏倚
C.选择偏倚
D.测量偏倚
E.报告偏倚
参考答案:B
The engineer are so busy that they have zero time for outdoor sports activities, ____ they
have the interest. [ ]
A. wherever
B. whenever
C. even if
D. as if
自来水通常做哪些水质检验项目?