单项选择题

The INMARSAT system is open for use by（）countries on a non-discriminatory basis.

A.some
B.lots of
C.many
D.all

点击查看答案&解析

上一题目录下一题

相关考题

单项选择题

Within the polar areas it is（）to see a satellite in geostationary orbit.

A.impossible
B.possible
C.easy
D.difficult

单项选择题

The position of INMARSAT AOR-W satellite is（）above the equator.

A.55.5 W
B.180E
C.15.5W
D.64.5E

单项选择题

The complying vessels can transmit ship-to-shore distress alerts by at least（）.

A.one means, whether satellite or terrestrial techniques
B.two means, whether satellite or terrestrial techniques
C.two separate and independent means, each using different radio communication services
D.two means, such as MF DSC and HF DSC