单项选择题
As it approaches，a typical warm front will bring（）.
A.rising temperatures and falling barometric pressure B.falling temperature and pressure C.falling temperatures and rising pressure D.rising barometric pressure and temperatures
单项选择题 As defined in the regulations governing marine casualties a “marine employer” may be the（）.
单项选择题 As compared to carbon dioxide，dry chemical has which advantage?（）
单项选择题 As a vessel changes course to starboard，the compass card in a magnetic compass（）.
