During the watch keeping at sea, routine adjustments should be ()
A. made and noted as required by the duty engineer
B. reported to chief engineer immediately after being made by duty engineer
C. never made before getting permission from chief engineer
D. made as required but not logged
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成型好的水泥试饼立即放入养护箱内,养护20~24小时。
A. 正确
B. 错误
APU ECU安装在()
A. 电子舱
B. APU舱
C. 驾驶舱
D. 后货舱
联结人与自然的中介是()
A. 地理环境
B. 生产劳动
C. 社会关系
D. 社会意识