题目内容

焊接电流、电弧电压以及焊接速度增加时都能使焊接线能量增加。（）

A. 正确
B. 错误

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平面闸门出厂前应进行整体组装，组装应在自由状态下进行，其组合处的错位应不大于（）mm。

A. 1.0
B. 2.0
C. 3.0
D. 5.0

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Owner shall have a lien on the cargo for freight，dead-freight，demurrage and damages for detention．It means that（）.

A. Owner will not deliver the cargo if freight not paid
B. Owner will keep the dead-freight until the cargo has been delivered
C. Owner will keep the demurrage as soon as the cargo be delivered
D. Owner shall have no right of detention for the damaged cargo to be delivered

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The interval of the average elapsed time from the meridian transit of the moon until the next high tide is called the（）.

A. harmonic constant
B. establishment of the port
C. half-tide level
D. tide cycle

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因修筑土围堰引起水流流速增大，使围堰外坡面有受冲刷危险时，可在外坡面用()等加以防护。

A. 草皮
B. 柴排
C. 片石
D. 草袋
E. 黏土

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焊接电流、电弧电压以及焊接速度增加时都能使焊接线能量增加。（）

A. 正确 B. 错误

平面闸门出厂前应进行整体组装，组装应在自由状态下进行，其组合处的错位应不大于（）mm。

Owner shall have a lien on the cargo for freight，dead-freight，demurrage and damages for detention．It means that（）.

The interval of the average elapsed time from the meridian transit of the moon until the next high tide is called the（）.

因修筑土围堰引起水流流速增大，使围堰外坡面有受冲刷危险时，可在外坡面用()等加以防护。

A. 正确
B. 错误