使用平车装载钢板时，每垛钢板采用（）加固2道，端部采用交叉斜拉加固。
参考答案：反右字下压
为什么跳远运动员在起跳时要用脚向下蹬地呢？
答：______
Your tank vessel is fully loaded, and you find that she is down slightly by the head. To adjust the trim, you may（）.
A.add ballast aft
B.load more cargo aft
C.shift cargo aft
D.All of the above
