30. A: Advise you change to VHF Channel 12. B: OK, no problem, ____________ on VHF Channel 12. (A) stand by (B) standing by (C) listen to (D) listening to

37. 翻譯：每次當值時間，以人力方式測試自動舵至少一次。 (A) The automatic pilot is tested manually at least once a watch. (B) The automatic rudder is tested manually at least once a duty. (C) The self-control pilot is tested manually at least once a watch. (D) The self-control rudder is tested manually at least once a duty.