The belt of light and variable winds between the westerly wind belt and the northeast trade winds is called the（）.

A.anticyclone
B.cold front
C.occluded front
D.cyclone

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

A.a high-pressure area
B.pressure difference over horizontal distance
C.pressure difference over time
D.vertical pressure variation