單項選擇題In writing up the log book at the end of your watch , you make an error .which of the following is the way to correct the error?（）.

A.Carefully and neatly erase the entryand rewrite it correctly
B.Remove this page of the log book and rewrite all entries on a clean page
C.Blot out the error completely and rewrite the entry correctly
D.Cross out the error with a single line and rewrite the entry correctly


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1.單項選擇題In writing up the logbook at the end of your watch,you make an erron in writing an entry. What is the proper means of correcting this error?（）.

A.cross out the error with a single line,and write the correct entry ,then initialit
B.carefully and neatly erase the and rewrite it correctly
C.remove this page of the log book , and rewrite all entries on a clean page
D.Blot out the error completely and rewrite the entry correctly

2.單項選擇題Increasing free surfaces has the effect of raising the（）.

A.uncorrected KG
B.virtual height of the center of gravity
C.metacenter
D.metacentric height

3.單項選擇題Increasing the area of the anchor flukes will（）.

A.increase holding power
B.decrease holding power
C.make penetration more complete
D.not effect holding power

4.單項選擇題Increasing the number of slack liquid tanks has effect of raising the（）.

A.uncorrected KG
B.maximun allowed KG
C.virtual height of the center of gravity
D.metacentric height