What is the most common problem associated with clutches?

Linda's stubbornness______ her in relationships with other people and she always turns a deaf ear to everything. A: affirms B: clutches C: deems D: hinders

All deck machinery require routine maintenance work, including splash lubrication for all totally enclosed working parts, lubricating open gears and clutches with open gear compound and ____. A: oiling the bearings with lubricant from the forced feed system B: greasing bearings on the shafts with high pressure guns C: painting the exposed parts with anti-corrosion D: disassembling the moving parts once every two months