A tropical wave is located 200 miles due west of your position，which is north of the equator. Where will the wave be in 24 hours? （）

A. Farther away to the west
B. Farther away to the east
C. In the same place
D. Closer and to the west

A tropical storm is building strength some distance from your ship. Waves are coming from the east，with periods increasing from 5 seconds to 15 seconds. The swell is from the east. Where was the storm when these new swells were generated? （）

A. To the north of you
B. To the south of you
C. To the east of you
D. To the west of you

A millibar is a unit of（）.

A. humidity
B. precipitation
C. pressure
D. temperature

A low，uniform layer of cloud resembling fog，but not resting on the ground，is called（）.

A. cumulus
B. nimbus
C. stratus
D. cirru

A local wind which occurs during the daytime and is caused by the different rates of warming of land and water is a（）.

A. foehn
B. chinook
C. land breeze
D. sea breeze

A line on a weather chart connecting places which have the same barometric pressure is called an（）.

A. isotherm
B. isallobar
C. isobar
D. isotope

（）moving rather quickly east expected 150 miles south of Cape Farewell 972 by 160000 GMT.

A. Developed low
B. Developing low
C. Being developed low
D. Low to be developed

（）LOW ELY SLWLY WITH COLD FRONT FM CEN TO 12N 179W AND WARM FROM FM CEN TO 11N 171W.

A. SHLW
B. SCTD
C. OBS
D. SW

When winds of force reach 10-11 in Beaufort Scale，usually we call such winds as（）.

A. Hurricane
Breeze
C. Storm
D. Gale

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