A.Mariners Guide

B.Tidal Current Tables

C.Nautical Almanac

D.Tide Table

正确答案：Tidal Current Tables

12、From（）the mariner can know the data of tide.

A.the sea pilot

B.the cargo plan

C.the tide table

D.the port list

正确答案：the tide table

13、Which is a weekly publication advising mariners of important matters affecting navigational Safety ？

A.Light List

B.Notice to Mariners

C.Coast Pilot

D.Sailing Directions

正确答案：Notice to Mariners

14、In which source could you find the number of a chart for a certain geographic area？

A.Chart No.1

B.Catalog of Charts

C.IMO Practical Navigator

D.IMO Light List

正确答案：Catalog of Charts

15、All of the following information concerning lighted aids to navigation may be read directly from the light list except the（）

A.location

B.height of light above water

C.luminous range

D.light characteristics

正确答案：luminous range

16、The arrangement of charts in the catalogue is（）.

A.on a regional basis

B.on a national basis

C.shown orderly

D.appeared from A to W

正确答案：on a regional basis

17、The datum from which the predicted heights of tides are reckoned in the tide table is（）.

A.mean low water

B.the same as that used for the charts of the locality

C.the highest possible level

D.given in table three of the tide tables

正确答案：the same as that used for the charts of the locality

18、Many of the soundings shown on the chart are derived from（）， Undue reliance should not be placed upon them.

A.complete and often very poor surveys

B.correct and often very good surveys

C.inadequate and often very old surveys

D.adequate and present surveys

正确答案：inadequate and often very old surveys

19、Lines on a chart which connect points of equal magnetic variation are called（）.

A.magnetic latitudes

B.magnetic declinations

C.dip

D.isogonic lines

正确答案：isogonic lines

20、How is the annual rate of change for magnetic variation shown on a pilot chart？

A.Gray lines on the uppermost inset chart

B.Red lines on the main body of the chart

C.In parenthesis on the lines of equal magnetic variation

D.Annual rate of change is not shown

正确答案：Gray lines on the uppermost inset chart

第二章单元测试

1、The correct method of switching off a marine radar is to turn power switch to（）position first， then to（）position.