试题详情

Make sure the label is firmly _______ to the parcel before you mail it.

After you ________ the wire to the television, make sure that the ___________ is secure. (connect)

Make sure that you complete the procedure before you tow the airplane back to its initial position.

Before you put new oil in the system,it is mandatory to replace the filter.

It is the management has to make sure its staff are not overworked.(5.0)(5.0) (5.0)