问题
单项选择题
How is a safe water mark，that can be passed close aboard on either side，painted and lighted?（）
A.Black and white stripes with an interrupted quick flashing light
B.Black and red stripes with a Morse (A) light
C.Black and red stripes with an interrupted quick flashing light
D.Red and white stripes with a Morse (A) light
答案
参考答案：D