叉车负载下坡时应采取（）进行方式。
A. 向前慢速前进，注意观察
B. 向后慢速行走，注意观察
C. “之”型前进，注意观察
D. “之”型后退，注意观察
牢固树立“（）”理念，加快推行并扩大“检养修”分开，确保检修、维修和养护工作有序化、制度化，消除作业无序化状态。
A. 三快一慎
B. 严检慎修
C. 三位一体
D. 三防一杜绝
A stand-on vessel is（）.
A. required to give way in a crossing situation
B. required to sound the first passing signal in a meeting situation
C. free to maneuver in any crossing or meeting situation as it has the right-of-way
D. required to maintain course and speed in a crossing situation but may take action to avoid collisio
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