（） must be done to solve this problem.

1、Care must be taken to condition the （）

Care must be taken to condition the （）in the boiler to prevent scaling, and corrosion, which can weaken the pressure vessel.AwaterBfuelCsteamDair

2、What must be done

What must be done to make a shared tape drive highly available？（）  A Ensure&ens...

3、（）, remedies must be taken to stop it

（）, remedies must be taken to stop it as early as possible.AAny surge occursBAny surge occurredCShould any surge occurDShould any surge occurring

4、A vessel casualty must be reported to

A vessel casualty must be reported to the MSA in China if it involves（）.Aloss of lifeBan injury requiring only first aidCproperty damageDloss of equipment which doesn't reduce the vessel's maneuverability

5、What should be done prior to backing u

What should be done prior to backing up an IOS image to a TFTP server?（）A Make sure that the server can be reached across the network.B C...

6、What should be done prior to backing u

What should be done prior to backing up an IOS image to a TFTP server?（）A Make sure that the server can be reached across the network.B C...