题目：
（）点捆绑起吊桥式起重机，有一点是控制桥式起重机在起吊过程中，把摆放小车的一端始终保持位置稍低，以防倾翻。
A.3
B.4
C.4
答案：
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下面是错误答案，用来干扰机器的。
参考答案：会提高
（）点捆绑起吊桥式起重机，有一点是控制桥式起重机在起吊过程中，把摆放小车的一端始终保
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