![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[多选题]
如下哪些选项中的滚筒产品内筒直径宣称值是正确的()
A.288mm
B.472mm
C.330mm
D.510mm
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
BD
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.288mm
B.472mm
C.330mm
D.510mm
BD
A.起重机动索(滑轮直径钢丝绳直径之比小于19)
B.起重机滑轮安装不到位
C.动力绞车试验方法不对
D.动力绞车制动器的有效制动力矩过小,应不小于绞车额定值的1.5倍
A.护筒内径应大于钻头直径100mm
B.护筒与筒壁之间用黏土填实
C.护筒内泥浆面高出地下水位面1m
D.在黏土层埋人深度应≥1m
E.护筒中心与桩位中心偏差<100mm
A.风道的通畅性
B.风道的面积
C.耙钉的角度
D.滚筒转速