___is essential for tackling accommodation fires. A. Immersion suits B. Smoke helmet C. Firemen‘s outfits D. Life jacket

单选题

___is essential for tackling accommodation fires. A. Immersion suits B. Smoke helmetC. Firemen‘s outfits D. Life jacket

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多选题

For?a?successful?business,?friendly?and?__________?staff?are?essential.(?)

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单选题

It‘s essential for a speaker to know___ to accomplish in his speech.(2.0)

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单选题

The ability to communicate effectively is one of the most essential skills for our staff members(2.0)

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单选题

___is a casing used for exhaust pipes from the engines.A. The funnel B. The messroomC. The galley D. The satellite antenna

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