問題詳情
20. In case of emergency, a ______ should be performed to make sure that each passengerand all the crew members are safely gathered at the assembly station.
(A) roll call
(B) proclamation
(C) broadcast
(D) declaration
參考答案
答案：A
難度：非常困難0
統計：A(0),B(0),C(1),D(0),E(0)