皮皮学，免费搜题
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【单选题】
二、下列哪一项不属于第一级客流控制?A.
在站厅与站台的楼梯、扶梯连接处设置控制点
B.
改变扶梯走向
C.
通过停用扶梯及引导乘客走楼梯等方式减缓乘客走行速度
D.
在进站闸机口设置铁马等备品限制乘客进站或分批放行乘客进站
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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A.
They are flight attendants.
B.
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C.
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D.
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