Please tell your officers ______ them carefully．
A. Watch
B. To watch
C. Watching
D. Watched
You are on a multiple-product tanker and scheduled to load a cargo classed as an aromatic
A. organic anhydrides
B. ketones
C. phenols
D. esters
You are to load styrene in bulk，which is subject to self-polymerization．You must ______．
A. Not carry any cargo in the tanks surrounding the tank loaded with styrene
B. Inject nitrogen to pad any ullage above the styrene to prevent contact with oxygen
C. Be furnished with a Certificate of Inhibition to be maintained on the bridge
D. Use heating coils to maintain the styrene within the temperatures specified by the shipper
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