正确答案: B
0.4~0.7R
题目:螺旋桨桨叶面上的B区是指()的区域和A区两侧边缘、吸力面0.7R以内范围。
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学习资料的答案和解析:
[单选题]吊缸检查气缸盖的气阀时,主要检查()的损伤情况。
阀面和阀座
[单选题]燃油系统的准备工作应检查()。Ⅰ.柴油日用油柜油位;Ⅱ.重油日用油柜油位;Ⅲ.油舱油位;Ⅳ.柴油日用油柜加热;Ⅴ.重油日用油柜加热;Ⅵ.调整低压输送泵压力
BⅠ+Ⅱ+Ⅳ+Ⅴ
[单选题]增压四冲程柴油机当停增压器运转时,可做的调整工作是()。
适当增大气阀间隙
[单选题]Low compression of diesel engine may result from ()
a worn cylinder
[单选题]The cylinder is fitted with internal liner so that a water space is left () the liner and the outer wall.
betwee
[单选题]Valve gear knocks are more easily located while the engine ().
is running
[单选题]In a four-stroke/cycle diesel engine, the camshaft rotates at ()
half the crankshaft speed