Care must be taken to condition the ______ in the boiler to prevent scaling, and corrosion

However, where immediate action is necessary to ensure safety of the ship, its machinery and crew, it must be taken by the engineer in chargeWhat dose “it” mean in the sentence above？

In determining safe speed，all of the following must be taken into account EXCEPT the （).

Care must be taken not to wash or iron synthetic fibers at _____.A、a too high temperatu

During repair, lubrication lines and orifices must be _____.A.taken awayB.engagedC.connect

How I wish that those orphans______good care of.A．will be takenB．would be takenC．must be t

Care must be taken in using this method lest overflow______.A．should occurB．occursC．occurr