—Sorry, I made a mistake again.

—________. Practice more and you will succeed.

A．That’s all right

B．That’s right.

C．Not at all

D．It’s a pleasure.

滚装客船在大风浪中航行，若不得不掉头时应防止转舵惯性离心力引起的倾侧力矩与外力（风浪）倾侧力矩的叠加。