3. What type of bearing is used to support the connecting rod on the crank pin and the wrist pin in high rpm two-stroke engines? A. Roller bearing B. Plain bearing C. Needle bearing D. Bushing 4. What is the purpose of the fibers in grease? A. It's the actual lubricating element in the grease. B. It prevents the lubricant from evaporating. C. It traps the lubricant and holds it in suspension. D. It thickens the grease. 5. Which type of outboard motor cooling systems is a variable volume system? A. Revolving cam pump B. Plunger pump C. Impeller pump D. Pressure vacuum pump 6. A PCV valve is used to control the A. amount of oil coming out of the oil pump. B. oil injected on a two-stroke engine. C. air that enters the crankcase. D. flow of exhaust gases. 7. The API C classification for lubricating oils pertains to which type of engines? A. Single-cylinder four-stroke gasoline engines B. Multicylinder four-stroke gasoline engines C. Two-stroke gasoline engines D. Two- or four-stroke diesel engines 8. What additive is added to lubricating oil to help the oil absorb water? A. Oxidation inhibitor B. Emulsifier C. Corrosion inhibitor D. Improver 9. Which of the following bearing types doesn't have an inner and outer race? A. Needle B. Roller C. Ball D. Tapered roller 10. Which one of the following oils isn't a multiviscosity oil? A. 5W-30 B. 10W-40 C. 10W-30 D. 50W 11. Type SA oil is used for A. highly turbocharged gasoline or diesel engines. B. light trucks and cars from 1980 to present. C. engines that operate under mild conditions. D. light-duty naturally aspirated diesel engines. 12. An impeller pump in an outboard motor uses an impeller made of A. stainless steel. B. bronze. C. synthetic rubber. D. brass. 13. Water circulates around a water-cooled engine's cylinder head and cylinder

We have just found out my wife is pregnant and I was wondering, as her back is sore (has been on and off since the birth of our first), is it safe to use one of those electric back massagers?? It is one of those hand held ones. Any advise is helpful.

I am designing a pin joint to support a RHS beam. From books (Steel Designers' Handbook 8.10.2) I have calculations for the required wall thickness, pin diameter and area around the hole for a simple pin joint. I want to use a bronze bushing between the pin and the hole. How do I calculate the minimum wall thickness of the bronze bushing? The bushing is to reduce friction when the beam pivots about the pin. It will also provide protection against galvanic corrosion. The beam is only pivoted when not under load. I want a compromise between load carrying capability and wear resistance. The book I am using refers heavily to Australian Standards. I was wondering if there are any industry references or requirements on the bushing wall thickness as it relates to AS, BS or ISO standards or accepted industry norms or calculations.

Just heard it around a lot while surfing the makup part of this site. But, I was wondering, is it better than real bush (you know, the pink kind)? Cause without makeup, my face is really pale and sometimes it has a pinkish tint to it, which I really hate...but it's always been this way. I've never really cared about it until now...because I'm in eighth grade and I wanna look my best! lol...so would bronzing blush help for my needs? Also, if so, what brand would you recommend? Thanks in advance!!!! Also, do you think the bronze blush would help make my face look more richer and not so pale and pinkish? Cause I think when I put the red blush on, it really brings out the red in my face....which I majorly dislike. lol