（）the vessel have no safety radiotelegraphy certificate at the time of her delivery，she（）be held to be unseaworthy．

A crew list is a piece of paper which shows （）.

Customs，upon boarding a vessel desiring entry into PRC port，would inspect which document（）.

A vessel’s Derat Certificate is always issued by （）.

According to the customs of this port，the work of opening and closing hatch covers is done by （）.

Effects which are dutiable or subject to prohibitions or restrictions should be declared in （）.

The citizenship of a crew member of a vessel is determined solely by the （）.

A vessel operating in class has met all the requirements of the （）.

Permission is kindly （） about 1000 tons of clean sea water ballast，as and when required for trimming purposes．

A document which has a list of names，birthplaces，and residences of persons employed on a merchant vessel bound from a PRC port on a foreign voyage and is required at every port is called the （）.