铸铁零件焊接修复方法要根据零件的外形,加工性能进行选择。
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门塔机是一种()。
A. 起重设备
B. 牵引设备
C. 吊装设备
D. 运移设备
After-cooling of a turbocharged diesel engine will result in ()
A. higher torque but lower brake horsepower
B. lower torque but higher brake horsepower
C. higher torque and lower brake horsepower
D. lower torque and higher brake horsepower