我厂斗轮堆取料的回转机构其回转角度为±110度，回转半径为30m。（)

A.±90

B.±110

C.±180

A.±140°

B.±130°

C.±110°

A.330°

B.300°

C.320°

D.180°

A.取料能力为80t/h

B.取料能力为800t/h

C.堆料能力为800t/h

D.取料能力为1000t/h

A.0.07～0.21r/min

B.0.7～0.21r/min

C.0.97～0.021r/min