题目内容

A Vessel grounds．Salvage services are provided and the vessel is successfully returned to

A. ① only
B. ② only
C. Both ① and ②
D. Neither ① nor ②

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下列组形中，属于“分离”的是()。

The owner or Master of a towing vessel shall ensure that all tests and inspections of gear

A. when a new Master assumes command
B. daily，at 0800 local zone time
C. weekly，before 2400 Saturday
D. immediately after assuming the watch

按照工艺要求，在进行()大修时，首先要切断总电源，做好预防性安全措施。

变压器和互感器的中性点接地属于保护接地。（)