正确答案: D
the scavenging box
题目:At the top of the A-frames there is a strong cast iron frame called ().
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学习资料的答案和解析:
[单选题]气缸盖底面裂纹一般产生在底面阀孔边缘和阀孔之间,即有()的部位。
应力集中
[单选题]在采用金属丝锁紧螺母时,金属丝缠绕螺母的方向应()。
与螺母的旋紧方向一致
[单选题]沿海及内河的船舶,其螺旋桨直径D()m时,螺旋桨和艉轴允许采用有键环氧树脂连接。
C.<4.5
[单选题]() or air venting arrangement is fitted to the fuel supply passage.
A priming
[单选题]In addition to lubricating, cylinder oil assists in forming a gas seal and contains () which clean the cylinder liner.
additives