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发布时间:2023-11-02 22:49:18

[单项选择]Which of the following is not a factor which can interfere with the pulse of sound and cause a variation the depth reading?()
A. salinity
B. temperature
C. the hydrostatic pressure
D. Vessel’s speed

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[多项选择]Which of the following IP addresses can be assigned to the host devices? ()
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[单项选择]Which factor of the following affects not only the fuels combustion but also the engine’s maintenance?()
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[单项选择]Which of the following marine insurance policies is normally purchased by the cargo owner?().
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