正确答案: B
负
题目:在水平平面内,当曲柄的两个主轴承位置偏左,曲轴轴线呈左弧线弯曲(即呈“(”形)时,该曲柄的臂距差Δ-为()值。
查看原题 查看所有试题
学习资料的答案和解析:
[单选题]动力系统包括下列管路系统()。
A+B+C
[单选题]活塞杆填料函安装在气缸底板中心孔中,具有()的作用。Ⅰ.密封扫气空气;Ⅱ.密封燃气;Ⅲ.除油污;Ⅳ.除积炭;Ⅴ.分隔。
D.Ⅰ+Ⅲ+Ⅴ
[单选题]相邻轴轴心线相交,但相邻轴两法兰中心未对准,其连接法兰处偏中值为()。
δ≠0、φ≠0
[单选题]桦木层压胶木是铁梨木的代用材料,具有材质致密、坚硬、耐热、绝缘性好、成材率高,缺点是()。Ⅰ.耐磨性差;Ⅱ.耐蚀性差;Ⅲ.耐水浸性差;Ⅳ.刚性差;Ⅴ.脆性大。
Ⅰ+Ⅴ
[单选题]对短轴系轴线校中理解错误的是()。
对轴系偏差不敏感
[单选题]In the sentence “In some designs the cylinder oil is timed so that the oil injects only on the piston ring belt, the "piston ring belt" means ().
piston ring area
[单选题]The hot expanding gas rotates the blades of the exhaust turbine, thus () a large of its power, () drives the compressor.
giving off;which
[单选题]Which term describes piston pins having bearing surfaces in both the piston bosses and connecting rod eye?()
Full floating
[单选题]Electrically operated safety devices on auxiliary diesel engines function to stop the engine by ().
shutting off the fuel supply