HOW IS A RADIO-QUIPPED BUOY OPERATED

13. - DE THI THU DH THAN KHAO CO DAP AN
Tiếng Anh DE THI THU DH THAN KHAO CO DAP AN
13. How is a radio-quipped buoy operated? A. by operators outside the vehicle on a diving platform B. by operators inside the vehicle in the part underwater C. By operators outside the vehicle on ship D. by operators outside the vehicle in a laboratory on shore