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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Which statement about the dangerous cargo manifest，carried on a ship，is TRUE ________．
A. The manifest must be made up by the Master or other designated ship's officer
B. Shipments of hazardous and non-hazardous cargo may be listed on the manifest if they are destined for the same consignee
C. The manifest must be kept in a designated holder on or near the bridge
D. The type of label（s）required for each cargo must be indicated
真理具有相对性，依靠人的思维只能达到逻辑的真。()
Which safety precaution（s）should be observed during crane operations ________．
A. Checking for proper lifting from beneath the load during cargo operations
B. Using the proper slings or other lifting devices during cargo operations
C. Relaying communications to port agents on the pier during cargo hoists
D. All of the above
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