影响单模光纤接续损耗的主要因素有?
参考答案:
芯径不同,轴心错位,不同心,数值孔径不同。
健康咨询的5A模式不包括下列哪个方面()
A.评估
B.询问
C.达成共识
D.协助
E.安排随访
.—Could you tell me ?
—Sure. Just go straight and turn left. You can see it on your right.
A.how I can get to the library
B.where can I find the library
C.how can I get to the library
D.where can I find the library