在Windows 7环境下,( )是内存中的一块区域。
A. 回收站
B. 剪贴板
C. U盘
D. 硬盘
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Electronic Fuel injection system can be divided into ______ basic sub-system.
A. two
B. three
C. four
D. five
The fuel system has the job of supplying a combustible mixture of air and fuel to the engine. There are two different types of petrol fuel systems: systems with a ______ and systems with electronic fuel injection (EFI).
A. carburetor
B. thermostat
C. throttle
D. regulator
Carburetor fuel systems and EFI systems are designed to deliver the fuel mixture to the engine in a combustible form, but each system does it in a different way.One basic difference is that carburetors______ the fuel, and injectors spray the fuel.
A. atomize
B. liquidate
C. solidify
D. freezing
There are three pipes (or lines) between the fuel tank ______ the vehicle and the components in the engine compartment.
A. at the rear of
B. at the front of
C. at the top of
D. at the bottom of