A vessel may use any sound or light signals to attract the attention of another vessel as long as（）.

I sounded five short blasts to warn the vessel（）the immediate danger of collision.

A sound signal of seven short blasts and one long blast given with the vessel’s sound system is（）.

While working in the engine room, you hear seven short blasts followed by one long blast on the ships whistle, supplemented by the same signal on the general alarm bellsYou should （）.

If your vessel is underway in fog and you hear one prolonged and three short blasts，this indicates a（）.

When you hear three short blasts on the ships whistle and the same signal on the general alarm bells, you （）.

If your vessel is underway in fog and you hear one prolonged and three short blasts，this is a （）.

While reading the muster list, you see that "three short blasts on the ships whistle and the same signal on the general alarm bells" is the signal for （）.

Jitter is an unwanted variation of one or more characteristics of a periodic signal in electronics and telecommunications and（）refers to call issues that cause variations in timing or time of arrival.

The alarm signal for engine room catching fire is a blast of random bell follow by （）

You are underway in fog and you hear one prolonged blast followed by two short blasts.This is a vessel（）.

The alarm signal for engine room catching fire is a blast of random bell followed by____.