问题
单项选择题
Ships equipped with Inmarsat SES send distress alerts both().
A.quick and good
B.convenient and certain
C.easily and simply
D.important and difficult
答案
参考答案:B
Ships equipped with Inmarsat SES send distress alerts both().
A.quick and good
B.convenient and certain
C.easily and simply
D.important and difficult
参考答案:B