Why wont my parents let me have a phone?

Interesting question by the way. you might experience a little nervous shaking here and there but not to apparent.

Some connecting rods have to lubricate the cylinder wall or piston pin. the answer is letter d. graphite coating can be a major  additive to many  coating  systems and things such as connecting rods.  it functions as a refractory, lubricant, thermal conductor, and electrical conductor for a machine or thing to enhance its work.