单项选择题
A.conflict B.accord C.harmonize D.struggle
The key feature of the Sulzer RT-flex system is that it...
单项选择题The key feature of the Sulzer RT-flex system is that it gives complete freedom in the and operation of fuel injection and exhaust valve actuation（）
A.metering B.control C.using D.timing
A clearly visible beneath of RT-flex engines is their o...
单项选择题A clearly visible beneath of RT-flex engines is their operation at all ship speedsThis is achieved by the superior combustion performance（）
A.shockless B.smokeless C.no vibration D.noiseless
There is a support ring between the cylinder block and ...
单项选择题There is a support ring between the cylinder block and collar of the cylinder liner, thus carrying both the liner and the cylinder coverIt also passes to the cooling bores and to the cover（）
A.cooling water B.cooling oil C.refrigerant D.lubricate oil
