Ethanol is commonly used as a gasoline supplement, but it is currently about()methanol.
A、twice as expensive as
B、twice as more expensive as
C、as twice more expensive as
D、as twice expensive as
A、twice as expensive as
B、twice as more expensive as
C、as twice more expensive as
D、as twice expensive as
A、Between;more commonly B、Among;the most commonly C、Between;not more commonly D、Among;not the most commonly
A、stored in a common fuel line B、pumped by the injection pump C、at low pressure D、already atomized
A、the most common method used in the United States B、too expensive for common use C、generally safe to sea life D、generally harmful to sea life