1. [单选题]The fire pumps must be capable of delivering a total quantity of water at a defined head, not less than _____ of the total bilge pumping capacity.
A. one-third
B. two-thirds
C. one-fourth
D. two-fourths
2. [单选题]按规定，用手动操纵装置将滑动式水密门完全关闭时间不超过( )s，且应满足在船舶向任一舷横倾至( )时也能将门关闭。
A. 90/15°
B. 60/10°
C. 60/15°
D. 90/10°
