30. The demarcation of the __________ coordinate is drawn hypothetically with circles on the globe parallel to the equator.
(A) horizontal
(B) latitude
(C) longitude
(D) vertical。
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統計: A(59), B(57), C(22), D(18), E(0) #2236401
統計: A(59), B(57), C(22), D(18), E(0) #2236401