单选题Masters of ocean-going ships must keep in mind that （） should be hoisted immediately if any quarantinable diseases be found．A the national flagB the quarantine signalC the Certificate of PratiqueD the navigational light

Ships’ masters are requested to ensure that during their call at this port，all discharging outlets are blocked ．

A.blockaded

B.opened

C.closed

D.enclosed

If your vessel is the stand-on vessel in a crossing situation ______.

A.you must keep your course and speed

B.you may change course and speed as the other vessel must keep clear

C.the other vessel must keep her course and speed

D.both vessels must keep their course and speed

A. The database must be in ARCHIVELOG mode

B. The database must be in MOUNT EXCLUSIVE mode

C. The database must be opened in RESTRICTED mode

D. The database instance must be started in the NOMOUNT state

E. The database instance must have the keep buffer pool defined

Masters of ocean-going ships must keep in mind that ______ should be hoisted immediately if any quarantinable diseases be found．

A.the national flag

B.the quarantine signal

C.the Certificate of Pratique

D.the navigational light

All masters， owners and agents ________ that vessels when requesting Immigration and Port Health Clearance must anchor at the designated Immigration and Quarantine Anchorage and exhibit the appropriate signals．

A.remind

B.is reminded

C.are reminded

D.to remind