用同缘测量法测量两个孔的距离时,外边缘距离650mm,内边缘距离630mm,两个孔的距离是?()
A、630mm
B、640mm
C、650mm
参考答案:B
—I ______ bringing my note book.
—No problem. You can borrow some paper from me.[ ]
A. planned
B. decided
C. left
D. forgot
B超监护不能显示的项目是()。
A.胎盘位置
B.胎心搏动
C.胎肺成熟度
D.胎方位
E.胎头双顶径