The marine sextant
Thechronometer
The magnetic compass
The gyrocompass
第1题：
此题为判断题(对，错)。
第2题：
Pressure gradient is a measure of ______.
A.a high-pressure area
B.pressure difference over horizontal distance
C.pressure difference over time
D.vertical pressure variation
第3题：
Horizontal equity vs．vertical equity横向平等与纵向平等
横向平等指的是：对境况类似的人给予平等或公平的待遇，强调的是基本情况相同的人应得到相同的待遇。
纵向平等指的是：对境况不同的人应给予平等的待遇。
第4题：
Permanent magnetism is found in ______.
A.hard iron
B.soft iron
C.vertical iron only
D.horizontal iron only
第5题：
This passage implies that ______.
A) horizontal faults are more dangerous than vertical faults
B) vertical faults are more dangerous than horizontal faults
C) earthquakes may occur around fault areas
D) California will break into pieces by an eventual earthquake
第6题：
We transfer this quotation into a graph _________ production as the vertical axis and time as the horizontal axis.
A: by
B: as
C: in
D: with
第7题：
The New Madrid fault is______.
A) a horizontal fault
B) a vertical fault
C) a more serious fault than the San Andreas fault
D) responsible for forming the Mississippi River
第8题：
动态HTML中垂直线条的转换特效类型是()
A. Vertical blinds
B. Horizontal blinds
C. Checkerboard across
D. Checkerboard down
第9题：
Permanent magnetism is caused by ______.
A.operation of electrical equipment and generators on board ship
B.the earth's magnetic field affecting the ship's hard iron during construction
C.the horizontal component of the earth's magnetic field acting on the horizontal soft iron
D.the vertical component of the earth's magnetic field acting on the vertical soft iron
第10题：
When loading containers into the cell guides in the hold of a container ship，which statement is TRUE ________．
A.No further securing is usually required
B.Containers must have vertical lashings if they do not have twist lock securing
C.All containers must have vertical and horizontal lashings
D.The container must be locked into the cell guide