【名词&注释】
环氧树脂(epoxy resin)、金属丝(wire)、螺旋桨直径(diameter of a propeller)
[单选题]At the top of the A-frames there is a strong cast iron frame called ().
A. cylinder liner
B. cylinder cover
C. the gear box
D. the scavenging box
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[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。
A. 应力
B. 较高应力
C. 应力集中
D. 拉应力
[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()。
A. 与螺母的旋紧方向一致
B. 与螺母的旋紧方向相反
C. 任意
D. 不予要求
[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。
A. A.<1.5
B. B.>1.5
C. C.<4.5
D. D.>4.5
[单选题]() or air venting arrangement is fitted to the fuel supply passage.
A. An air pump
B. A compressor
C. A fuel pump
D. A priming
[单选题]In addition to lubricating, cylinder oil assists in forming a gas seal and contains () which clean the cylinder liner.
A. additives
B. water
C. grease
D. acid solutio
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