A rapid rise or fall of the barometer indicates().
A、heavy rain within six hours
B、a decrease in wind velocity
C、a change in the present weather conditions
D、that fog will soon set in
A、heavy rain within six hours
B、a decrease in wind velocity
C、a change in the present weather conditions
D、that fog will soon set in
A、A.start to rise rapidly B、B.start to fall gradually C、C.rise slowly,begin pumping and then start a slow,steady fall D、D.remain steady
A、rising temperatures and falling barometric pressure B、falling temperature and pressure C、falling temperatures and rising pressure D、rising barometric pressure and temperatures
A、Clear weather with no wind,but the possibility of rain or snow within 24 hours B、Deteriorating weather with rain or snow C、Heavy rain or severe thundershowers D、Clearing weather,possibly accompanied by high winds
A、A.Falling barometric pressure B、B.Rising barometric pressure C、C.The circulations of winds D、D.The change of wind direction
A、Temperature falls below normal,pulse is rapid and feeble,skin is cold and clammy B、Temperature is high,pulse is strong and rapid,skin is hot and dry C、Temperature is high,pulse is slow and feeble,skin is clammy D、Temperature falls below normal,pulse is rapid,skin is clammy