单选题

时差=+4m,世界时GMT=00h00m00s,平太阳⊕和视太阳⊙的格林时角GHA分别为()。

A. GHA⊕=⊙179°,GHA⊙=180°
B. GHA⊕=⊙181°,GHA⊙=180°
C. GHA⊕=⊙180°,GHA⊙=181°
D. GHA⊕=⊙180°,GHA⊙=179°

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