Distance along a track line is measured on a Mercator chart by using the （）.

A、increases in north latitude and decreases in south latitude B、decreases as DLO increases C、increases with increased latitude D、decreases with increased latitude

A . Bell alarm to warn the user B . Lighted alarm signal to warn the user C . Alternate signal keying system D . View finder for each statio

A . to B . of C . at D . o

A . Mercator projection B . polyconic projection C . orthographic projection D . gnomonic projectio

A . easterly courses in high latitudes B . southerly courses in high latitudes C . westerly courses in low latitudes D . easterly courses in low latitudes that cross the equator

A . increasing B . decreasing C . remaining the same D . varying during the day

A . the direction the storm has come from B . the direction in which the storm is moving C . the speed at which the storm is moving D . the path taken by the storm

A . Send periodic updates regardless of topology changes. B . Send entire routing table to all routers in the routing domain. C . Use the shortest-path algorithm to the determine best path. D . Update the routing table based on updates from their neighbors. E . Maintain the topology of the entire network in its database.

A . avoid crossing the channel at right angles B . not overtake any vessels within the channel C . keep as near as safe and practicable to the limit of the channel on her starboard side D . when nearing a bend in the channel，sound a long blast of the whistle

A . Easily plotted on a Mercator chart B . Negligible increase in distance on east-west courses near the equator C . Does not require constant course changes D . Plots as a straight line on Lambert conformal chart

A . Send periodic updates regardless of topology changes. B . Send entire routing table to all routers in the routing domain. C . Use the shortest-path algorithm to the determine best path. D . Update the routing table based on updates from their neighbors. E . Maintain the topology of the entire network in its database.

A . from the still water plane to the crest B . from the still water plane to the trough C . from crest to trough D . between water levels at one-quarter of the wave's length

A . always be nearer to the equator B . always be nearer to the elevated pole C . be nearer to the pole in the Northern Hemisphere and nearer to the equator in the Southern Hemisphere D . be nearer to the pole or the equator depending on the latitudes of the arrival and departure positio

A．getting,walk B．getting,walk to C．to get,walk D．to get,walk to

是 否

A．Hurdles B．Mat exercises C．Walking race D．Relay race