焦炉所用正常氨水表压（）。

A、0.1Mpa

B、0.1-0.2Mpa

C、0.3Mpa

A racetrack turn would be better than a Williamson turn in recovering a man overboard if（）.

A.the man has been missing for a period of time

B.the sea water is very cold and the man is visible

C.there is thick fog

D.the wind was from astern on the original course