Cracksmaybepreventedfromdevelopingatthecornersofweldedplatinginsertsby（）.
A. squaringthecorners
B. roundingthecorners
C. plugweldingthecorners
D. slotweldingthecorners
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Duringfueling，alldoors，hatches，andports（）.
A. towindwardshouldbeopenedandtheonestoleewardshouldbeclosed
B. toleewardshouldbeopenedandtheonestowindwardshouldbeclosed
C. shouldbeopened
D. shouldbeclosed
Thewaterlevelinasteamingauxiliaryboilerwillalways（）
A. risewhenthesteampressureisincreased
B. remainconstantaslongasthefeedpumpoperates
C. fallwhenthesteampressureisdecreased
D. varyasthesteamdemandchanges
HatchNo.1mustbecleaneduptomeetthe（）ofthecargosurveyors．
A. necessity
B. responsibility
C. requirement
D. stipulation
Thesafetyvalvesshouldbetestedandadjustedwhentheboilersurveyis（）
A. completed
B. carriedout
C. cleaned
D. steamed
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