A safety outlet is provided on the CO2 discharge piping to prevent（）.
1、Safety valves on a boiler vent to the
Safety valves on a boiler vent to the （）.Afuel tankBbilgeCatmosphereDauxiliary exhaust line
2、The Plimsoll mark on a vessel is used
The Plimsoll mark on a vessel is used to（）.Aalign the vessel's tailshaftBdetermine the vessel's trimCdetermine the vessel's freeboardDlocate the vessel's centerline
3、The ONS 15216 is a 32-channel system.
The ONS 15216 is a 32-channel system. The ONS 15216 OADMs are capable of adding and dropping one, two, or four channels. How are the OADMs ...
4、The crane is usually mounted on a pede
The crane is usually mounted on a pedestal to offer adequate （） to the operator.AtimeBspaceClengthDvisibility
5、A bollard is found on the（）.
A bollard is found on the（）.AbeachBdeckCpierDtowed vessel
6、On a ship，the deck stringer is the out
On a ship，the deck stringer is the outboardmost deck（）.AplatingBbeamCstiffenerDstanchio