at high speed and full load
at low speed and part load
when heavy fuel oil is used at sea
when the ships run long distance
第1题：
A.shows...progresses
B.show...progresses
C.show...progress
D.shows...progress
第2题：
The art show was _______ being a failure; it was a great success.
A. far from B. along with C. next to D. regardless of
第3题：
Adam Smith mentioned the number 4 800 in order to ______.
A．show the advantages of the division of labor
B．emphasize how powerful the individual worker was
C．show the advantages of the old craft system
D．emphasize the importance of increased production
第4题：
第5题：
All diesel engines are classified as ______．
A.Four cycle
B.Compression ignition
C.Vacuum ignition
D.External combustion
第6题：
The display screen is the most common (72) device used to show you what the computer is doing．
A．input
B．printing
C．output
D．electronic
第7题：
Modern marine diesel engines equipped with mechanical fuel injection operate on a combustion phase within the cycle which is ______.
A.entirely constant pressure
B.entirely constant temperature
C.a combination of constant volume and constant pressure
D.a combination of constant temperature and constant pressure
第8题：
The error messages given by a C compiler show the message text，the most common(68) of the error，and a suggestion for fixing the error．
A．consequence
B．cause
C．information
D．result
第9题：
Diesel engines obtain combustion air through turbo chargers，blowers，or ______．
A.Air starters
B.Carburetors
C.Natural aspiration
D.Air receivers
第10题：
The advantage of rail transport is （）