And they must be swifter to embrace new technology, from the excitement of the Internet to the _______of the telephone.

单选题

And they must be swifter to embrace new technology, from the excitement of the Internet to the _______of the telephone.

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判断题

Managers in non-U.S. companies must be aware of equal employment opportunity laws in the US and in countries where they do business.

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单选题

( ) must be between on-line deployment and final acceptance.

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问答题

must be

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判断题

The reference directions of currents and voltages must be the real directions of currents and voltages.

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