單項(xiàng)選擇題

The forward movement of a ship in one revolution of its propeller is measured by（）.

A.advance
B.head reach
C.pitch
D.transfer

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單項(xiàng)選擇題

The distance that a ship moves forward with each revolutionof its propeller，if there is no slip，is called（）.

A.advance
B.head reach
C.pitch
D.transfer

單項(xiàng)選擇題

The distance between rivets in a row is known as the（）.

A.arm
B.pitch
C.gage
D.rivet distance