A. 对 B. 错
A. Varies models and sizes are available. B. The product is available. C. I will contact my bank and urge them to open the L/C as soon as possible.
A. 日常通信 B. 播发海上安全信息 C. 驾驶台与驾驶台的通信 D. 遇险船舶的可靠通信