Lines drawn through points on the Eart

1、Isogonic lines are lines on a chart in

Isogonic lines are lines on a chart indicating （）.Apoints of equal variationBpoints of zero variationCthe magnetic latitudeDmagnetic di

2、On point-to-point networks, OSPF hello

On point-to-point networks, OSPF hello packets are addressed to which address?（）A127.0.0.1B172.16.0.1C192.168.0.5D223.0.0.1E224.0.0.5F254.255.255.255

3、Lines on a chart which connect points

Lines on a chart which connect points of equal magnetic variation are called （）.Amagnetic latitudesBmagnetic declinationsCdipDisogonic line

4、For threequarters of its span on Eart

For threequarters of its span on Earth, life evolved almost _______ as microorganisms.AA precisely B instantly C initially D exclusively

5、The loran lines drawn on navigation ch

The loran lines drawn on navigation charts represent（）.AGround wavesBSkywavesCEither ground waves or skywaves interchangeablyDAn average between ground wave and skywave positio

6、Through the open window we saw on the

Through the open window we saw on the floor the happy father lying （） his stomach, his daughter riding excitedly on his back.AonBwithCaboveDfrom