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【多选题】
绘制机械图样的三种比例是 , 和 。A.
缩小比例
B.
比例
C.
比例
D.
放大比例
E.
1:2
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A.
three.
B.
four.
C.
five.
D.
six.
【单选题】S1:Chief , let go port anchor.S2:Roger, port anchor let go.S1:Where is cable leading now?S2:Two shackles on deck, cable leading forward.S1:Keep paying out the cable.S2:Roger, pay out cable. Three shac...
A.
Four shackles.
B.
Three shackles.
C.
Two shackles.
D.
Five shackles.
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