题目内容

The navigational term Set of current means ______.

A. velocity of current in knots
B. direction from which the current flows
C. estimated current
D. direction toward which the current flows

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The most effective way to apply a foam stream if the fire is on deck or is a runing fire,

A. onto the surface of the burning liquid
B. ahead of the burning liquid and bounce it on the fire
C. at the base of the burning liquid in a sweeping motion
D. just above the surface of the burning liquid

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简述产品责任及其构成要件。

简述生产者保证产品内在质量的义务。

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