A: QoS
B: call setup and teardown
C: call routing
D: call supervision
E: audio signal compressio
举一反三
- Which of the following are functions that are often provided by an ITSP but are not typically provided by the PSTN？（） A: QoS B: call setup and teardown C: call routing D: call supervision E: audio signal compression
- Wake-up call service is usually provided by the ___department. A: Guest Service Center B: F&B C: Finance D: Engineering
- Which device is normally used to translate telephone numbers or names to IP addresses for call routing in an H.323 network？ （） A: call agent B: IP phone C: multipoint control unit D: gatekeeper
- When making preparations for a business call, which of the following is not right?
- 号召 A: call for B: call off C: call on D: call by
内容
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Which of the following can be used to create a long position in a European put option on a stock? A: Buy a call option on the stock and buy the stock B: Buy a call on the stock and short the stock C: Sell a call option on the stock and buy the stock D: Sell a call option on the stock and sell the stock
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【单选题】The workers agreed to ____ the strike if the company would satisfy their demand. A) call off B) call out C) call to D) call on A. call off B. call out C. call to D. call on
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64. DSC call is only an alerting signal and the communication which follows the call will be madeon the appropriate frequency band using（） A: either RT or NBDP B: either SART or EPIRB C: SART and radar D: DSC and RT
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No one can _________ yesterday. A: call on B: call from C: call back D: call at
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I ____ your office on my way to work. A: call at B: call for C: call in D: call on