单选题A chart projection depicting the poles and a small area on either side of a connecting meridian，that is sometimes used for star charts，is the（）.A Azimuthal gnomonic projectionB Lambert conformal projectionC Transverse Mercator projectionD Polyconic pro

● As a control tool, the bar chart (Gantt) methods is most beneficial for:

A rearranging conflicting tasks

B depicting actual versus planned tasks

C showing the outer dependencies of tasks

D A and C.

E A and D

In the event of a small bunker oil spill on deck occurring while bunkering, you should ____.

A.wash down the area immediately with a fire hose

B.wash down the area with kerosene

C.cover the area with absorbent material

D.cover the area with foam

As a control tool, the bar chart (Gantt) methods is most beneficial for:

A.rearranging conflicting tasks

B.depicting actual versus planned tasks

C.showing the outer dependencies of tasks

D.A and C.

E.A and D

The revision date of a chart is printed on which area of the chart?

A.Top center

B.Lower-left corner

C.Part of the chart title

D.Any clear area around the neat line

A Mercator chart is a ______.

A.cylindrical projection

B.simple conic projection

C.polyconic projection

D.rectangular projection

Many of the small towns in the area are definitely worth visiting. (英译汉)

All straight lines represent great circle tracks on a chart based on a(n) ______.

A.Mercator projection

B.polyconic projection

C.orthographic projection

D.gnomonic projection

30 As a control tool, the bar chart (Gantt) methods is most beneficial for:

A. rearranging conflicting tasks

B. depicting actual versus planned tasks

C. showing the outer dependencies of tasks

D. A and C.

E. A and D

The only cylindrical chart projection widely used for navigation is the ______.

A.Lambert conformal

B.Mercator

C.azimuthal

D.gnomonic

When navigating in high latitudes and using a chart based on a Lambert conformal projection，______.

A.a straight line drawn on the chart approximates a great circle

B.the chart should not be used outside of the standard parallels

C.the course angle is measured at the mid-longitude of the track line

D.distance cannot be measured directly from the chart