自营业务与经纪业务相比（）。

The certificate shall have effect ______ all Chinese ports．

A.to

B.for

C.in

D.on

A.no disposal

B.ineffective

C.no result

D.no event

The certificate of pratique certifies that ______.

A.the ship has no rats or mice on board

B.no quarantinable disease has been found on the vessel

C.no person has died during the voyage the ship has just completed

D.all the crew members have no health problem

A.void and null

B.null and void

C.useless

D.unusable

International Load Line Certificate shall be carried on board by ______.

A.all ships

B.cargo ships only

C.passenger ships

D.those ships loaded with dangerous chemicals in bulk

英译汉：“free pratique；disinfection certificate”，正确的翻译为（）。

A．船舶入境卫生检疫证；分析证书

B．消毒证书；船舶入境卫生检疫证

C．船舶入境卫生检疫证；消毒证书

D．分析证书；消毒证书

英译汉：“free pratique；disinfection certificate”，正确的翻译为（）。

A．船舶入境卫生检疫证；分析证书

B．消毒证书；船舶入境卫生检疫证

C．船舶入境卫生检疫证；消毒证书

D．分析证书；消毒证书

英译汉：“free pratique; disinfection certificate”，正确的翻译为：()。

A．船舶入境卫生检疫证；分析证书

B．消毒证书；船舶入境卫生检疫证

C．船舶入境卫生检疫证；消毒证书

D．分析证书；消毒证书

英译汉：“free pratique；disinfection certificate”，正确的翻译为()。

A．船舶入境卫生检疫证；分析证书

B．消毒证书；船舶入境卫生检疫证

C．船舶入境卫生检疫证；消毒证书

D．分析证书；消毒证书

英译汉："free pratique；disinfection certificate”，正确的翻译为：()。

A．船舶入境卫生检疫证；分析证书

B．消毒证书；船舶入境卫生检疫证

C．船舶入境卫生检疫证；消毒证书

D．分析证书；消毒证书