外径千分尺固定套筒上露出的读数为15.5mm，微分筒对准基准线数值为37，则整个读数为（）。

A.15.87mm

B.15.37mm

C.19.20mm

D.52.5mm

The Network Coordination Station for the INMARSAT-A coast stations in the Pacific ocean region is in（）.

A.Yamaguchi, Japan

B.Beijing, China

C.Nakhodka, Russia

D.Perth, Australia