A .090°
B .050°
C .100°
D .270°
[单选题]测者纬度等于30°N,天体圆周方位等于312°,换算为半圆方位应为()。A .048°NEB .132°SWC .048°NWD .132°SE
[单选题]天体圆周方位等于132°,测者纬度等于10°S,换算为半圆方位应为()。A .132°NEB .048°SEC .048°SWD .018°SE
[单选题]天体圆周方位等于300°,测者纬度等于20°S,换算为半圆方位应为()。A .120°SWB .140°SWC .060°NWD .080°NW
[单选题]天体圆周方位等于300°,测者纬度等于10°N,换算为半圆方位应为()。A .060°NEB .120°SWC .060°NWD .120°SE
[单选题]测者纬度为30S,测得某天体的半圆方位等于050°SE,则其圆周方位等于()。A .130°B .230°C .050°D .310°
[单选题]天体上中天时,其方位等于()。A .090°B .180°C .000°D .B和C均可
[单选题]测者纬度等于1030′S,测得某天体方位等于225°,其半圆方位为()。A .135°NWB .45°NWC .135°SED .45°SW
[单选题]请问天体圆周方位是()。A .从北点起沿真地平圈顺时针度量到天体垂直圈B .从北点起沿真地平圈向西度量到天体垂直圈C .从南点起沿真地平圈向东度量到天体垂直圈D .从南点起沿真地平圈向西度量到天体垂直圈
[单选题]测者纬度φ=0°,天体赤纬Dec=30°S,该天体真没时的圆周方位等于()和半圆方位等于()。A .120°;60°SEB .210°;30°SWC .240°;120°NWD .240°;60°SW
[单选题]测者纬度φ=0°,天体赤纬Dec=10°S,该天体真出时的圆周方位等于(),真没时的圆周方位等于()。A .10°;10°B .80°;280°C .100°;260°D .100°;100°