The permanent magnetism of a vessel may change in polarity due to().
A. being moored for a long time on one heading
B. being struck by lighting
C. steaming from the north magnetic hemisphere to the south magnetic hemisphere
D. loading a homogenous magnetic cargo such as steel plate,iron bars,etc
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根据我过《矿山安全条例》,在下列条件下开采,必须编制专门设计,报经矿山企业主管部门批准:()。
A. 需要保护的建筑物和铁路下面
B. 地温异常或有热水涌出的地区
C. 有瓦斯突出危险的矿井
D. 水体上面
Even if()vessel was unseaworthy,a Shipowner can still rely on the exception perils if the loss has not been caused by unseaworthiness.
A. her
B. their
C. its
D. hi
无运转车长值乘的列车,接方进行货运检查发现间题后,按规定拍发的电报应作为有车长值乘时交方出具的()。
A. 交接证明
B. 证明
C. 记录
D. 普通记录
某干线车站停电,接车进路未准备妥当,即将列车接入站内,造成货物列车与停留车相撞,机车车辆脱轨3辆,应列为什么事故?