With a given load on the cargo hook，tension in a single span topping lift（）.<br>A:increases as the boom's angle to the horizontal increases<br>B:is at a maximum when the boom is at a 45° angle to the horizontal<br>C:increases as the boom's angle to the horizontal decreases<br>D:decreases as the boom's angle to the horizontal decreases

With a given load on the cargo hook，tension in a single span topping lift（）.
A:increases as the boom's angle to the horizontal increases
B:is at a maximum when the boom is at a 45° angle to the horizontal
C:increases as the boom's angle to the horizontal decreases
D:decreases as the boom's angle to the horizontal decreases

出自：海船船员证

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