Which of the following reasons represents why the designed compression ratio of a gasoline engine is lower than that of a diesel engine?

A．compression must be low for effective spark ignition

B．compression must be low for required horsepower and torque generation

C．compression must be low to prevent pre-ignition

D．compression must be low to have effective pre-ignition

[单选题]Which of the following statements does not accurately represent the objecti

[单选题]Which of the following would most likely represent an inappropriate use of

[单选题]According to its geographical location，which one can be used to represent A

[单选题]According to its geographical location，which one can be used to represent A

[单选题]According to its geographical location，which one can be used to represent A

[单选题]According to its geographical location，which one can be used to represent A

[单选题]In a computer，which of the following is the longest period? (66) .(66) A．Beat periodB．Machine periodC．Instruction periodD．CPU period

[单选题]Which of the following is NOT mentioned？A．Supermarket. B.Police station. C.School.

[单选题]Which of the following information is NoTmedtioned？A．Who wrote the stories. B.Which story is the longest.C．When we added the stories. D.Who added the stories.

[单选题]Which of the following is the result of the volcanic eruption?A． People stop traveling in EuropeB． Airlines suffer from the loss of planesC． It becomes dangerous for animals to eat outsideD． Farmers have lost many of their animals