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[单选题]相邻轴轴心线相交,但相邻轴两法兰中心对准,其连接法兰处偏中值为()。
A. δ=0、φ=0
B. δ=0、φ≠0
C. δ≠0、φ=0
D. δ≠0、φ≠0
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学习资料:
[单选题]常见气阀的损伤有()等。Ⅰ.气阀阀盘锥面;Ⅱ.阀面的烧伤与高温腐蚀;Ⅲ.阀盘与阀杆的裂纹;Ⅳ.阀杆的弯曲变形;Ⅴ.阀杆的磨损。
A. Ⅰ+Ⅱ+Ⅲ
B. Ⅰ+Ⅲ+Ⅳ+Ⅴ
C. Ⅰ+Ⅱ+Ⅲ+Ⅴ
D. Ⅰ+Ⅱ+Ⅲ+Ⅳ+Ⅴ
[单选题]() allows for expansion and water make up in the water cooling system.
A. A top tank
B. A head tank
C. A head valve
D. A drain tank
[单选题]A single piece() fitted with bronze rings guides the piston in the cylinder liner.
A. piston skirt
B. piston crown
C. guide way
D. cross-head
[单选题]The engine is started with () supplied from air receivers.
A. pressure oil
B. pressure water
C. compressed air
D. cooling water
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