问题：
[单选题]A barometer showing falling pressure indicates the approach of a（）.
A、high pressure system
B、low pressure system
C、high dew point
D、low dew point
参考答案：
B
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- ● A barometer howing falling preure indicate the approach of a（）.
- ● If a weather bulletin how the center of a low preure ytem to be 100 mile due eat of you，what wind can you expect in the Southern Hemiphere?（）.
- ● If your weather bulletin how the center of a low preure area to be 100 mile due eat of your poition，what wind can you expect in the Northern Hemiphere?（）.
- ● A rapid rie or fall of the barometer indicate（）.
- ● The mot important information to be obtained from a barometer i the（）.
- ● Coral atoll，or a chain of iland at right angle to the radar beam，may how a a long line rather than a individual target due to （）.
- ● A a high preure ytem approache，the barometer reading（）.
- ● A common rail engine ha only one or two high preure pump in operation at the ame（）time, and the injection into each cylinder.
- ● The vapor preure of a ga i the preure neceary to keep it in a(n)（）.
- ● During the coure of a voyage，a eaman fall on the main deck and injure hi ankle. The Mater hould ubmit a Report of Marine Accident，Injury or Death if the（）.
