单项选择题
A.conduction fog B.radiation fog C.frontal fog D.advection fog
The belt of light and variable winds between the wester...
单项选择题The belt of light and variable winds between the westerly wind belt and the northeast trade winds is called the（）.
A.subtropical high pressure belt B.intertropical convergence zone C.doldrum belt D.polar frontal zone
The atmosphere in the vicinity of a high pressure area ...
单项选择题The atmosphere in the vicinity of a high pressure area is called a(n)（）.
A.anticyclone B.cold front C.occluded front D.cyclone
Prior to reading an aneroid barometer，you should tap th...
单项选择题Prior to reading an aneroid barometer，you should tap the face lightly with your finger to（）.
A.expose any loose connections B.demagnetize the metal elements C.bring the pointer to its true position D.contract and expand the glass face
