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

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

For the CAP to be successful on a continuing basis. It is essential that a free flow of Information exist between the operator, FAA and ABC Aircraft Company.

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多选题

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

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单选题

It is essential that you ______ competitive prices.

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单选题

In designing schematic diagrams, it may be necessary to compromise between detail that is necessary to make the diagram self-explanatory, and simplicity that is essential for ease of reading and understanding.

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