问题
单项选择题
装配式桥梁构件在吊装时,吊绳与起吊构件的交角应大于()。
A、30°
B、45°
C、60°
D、75°
答案
参考答案:C
装配式桥梁构件在吊装时,吊绳与起吊构件的交角应大于()。
A、30°
B、45°
C、60°
D、75°
参考答案:C
完成对话。 | |
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