A radar contact will remain stationary on a relative motion radar display only when it is（）.
1、This Certificate will remain in force
This Certificate will remain in force until May 1，2009. （）.AThis Sentence refers to the validity of the CertificateBThis Sentence refers to t...
2、A circuit that has one wire in contact
A circuit that has one wire in contact with the hull of the ship is a（）Aseries circuitBgrounded circuitCshort circuitDclosed circuit
3、The stability which remains after a co
The stability which remains after a compartment is flooded is called（）.Aintact stabilityBinitial stabilityCimmersion stabilityDdamage stability
4、When a vessel is stationary and in a h
When a vessel is stationary and in a hogging condition，the main deck is under（）.Acompression stressBtension stressCshear stressDracking stre
5、When using a radar in a unstabilized m
When using a radar in a unstabilized mode，fixes are determined most easily from（）.Acenter bearingsBtangent bearingsCrangesDobjects that are close aboard
6、All of our customers will be contacted
All of our customers will be contacted（）Aby mailBby the mailCby mailsDby a mail