Theoutletfromanexpansiontankofaclosedfreshwatercoolingsystemshouldbepipedtothe（）.
A. cylinderheadwateroutletheader
B. cylinderjacketinletmain
C. heatexchangerinletconnection
D. jacketwaterpumpsuctionline
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Theintakevalvesinadieselenginearereseatedby（）.
A. camfollowers
B. pushrods
C. combustiongases
D. valvesprings
（）thatkindofweatherpersist，itwouldbeverylikelythatthetwoshipswouldtoucheachother.
A. If
B. Providedthat
C. Should
D. When
（）thewayfromShanghaitoJapan，theshipencounteredheavyweather.
A. On
B. At
C. During
D. In
Theexpansiontankinadieselengineclosedfreshwatercoolingsystemislocatedat（）
A. thehighestpointinthesystem
B. thelowestpointinthesystem
C. nearthefloor
D. platelevelornearthetanktoplevel
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