42.如图                                                            B

(1)A点位于      纬度带                      45

(2)B点位于     半球(南北)                                              

(3)B点在A点的         方向。               30

(4)若A地是4月30日晚上9点,

    则B地的时间是   月   日     时。       15

                                                      A

 

                                                  170          180      170

                        

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