问题：
[单选] As a high pressure system approaches，the barometer reading（）.
stays the same。falls。rises。falls rapidly。
问题：
[单选] As a licensed Merchant Marine Officer you are expected to（）.
obtain a weather forecast before setting out from port。listen to weather forecasts on the radio while enroute。understand all broadcast weather warning information。All of the above。
问题：
[单选] As a vessel changes course to starboard，the compass card in a magnetic compass（）.
remains aligned with compass north。also turns to starboard。first turns to starboard then counterclockwise to port。turns counterclockwise to port。
问题：
[单选] As compared to carbon dioxide，dry chemical has which advantage?（）
Cleaner。Effective on metal fires。Greater range。More cooling effect。
问题：
[单选] As it approaches，a typical warm front will bring（）.
rising temperatures and falling barometric pressure。falling temperature and pressure。falling temperatures and rising pressure。rising barometric pressure and temperature。
问题：
[单选] As seen from the tow，what should connect the leading ends of both towing bridle legs to the main towing hawser?（）
A cable clamp。A fishplate，flounder，or towing plate。A pad eye。The towing bitt。
问题：
[单选] As the South Equatorial Current approaches the east coast of Africa，it divides with the main part flowing south to form the warm（）.
Agulhas Current。Canary Current。Benguela Current。Madagascar Current。
问题：
[单选] As the temperature of an air mass decreases，the（）.
absolute humidity decreases。relative humidity increases。specific humidity decreases。dew point rise。
问题：
[单选] As the temperature of the air reaches the dew point，（）.
rain must develop。fog may form。it begins to snow。water freeze。
问题：
[单选] As you approach Giles Bend Cutoff Light (mile 367.7 LDB)，what type of daymark would you see on the light structure?（）
Green diamond。Green triangle。Red diamond。Red square。
