进行相关关系精度评估统计计算的()值一般不应少于10。
A.年度测次
B.年度容量
C.样本测次
D.样本容量
参考答案:D
当牙完全萌出后,结合上皮附着于()
A.牙釉质
B.牙骨质
C.牙颈部
D.釉牙骨质界
E.牙根面
I was doing my homework in my bedroom _______the light went out. I did it with a candle on.
A.which
B.while
C.when
D.where