To measure temperature, we have to ___ some kind of suitable temperature scale.

A.He distinguished himself in low temperatu, re physics.

B.He fell in love with Natasha Willoughby.

C.He became a professor of Mathematics.

D.He started to work on refrigeration.

An automated diesel engine should normally shut down due to _____.

A.low lube oil temperature

B.high ambient air temperature

C.low tube oil pressure

D.high exhaust system back pressure

Care must be taken not to wash or iron synthetic fibers at _____.

A、a too high temperature

B、too a high temperature

C、too high a temperature

D、a temperature too high

A disadvantage of a four-stroke/cycle diesel engine is ________.

A.higher working temperature of piston and cylinder

B.the use of scavenge ports

C.fewer power strokes per revolution of the crankshaft

D.part of the fuel is burned as the piston is moving away from top dead center