下列哪项不是垂直距离恢复过大的表现（）
A．咀嚼效能下降
B．颏部前突
C．颏唇沟变浅
D．说话进食时出现后牙撞击声
E．面下1/3距离增大
参考答案：B
After the flooding, people were suffering in that area, _____ urgently needed clean water, medicine and shelter to survive.
A．who
B．where
C．which
D．that
在TOSI燃煤锅炉点火升压过程中，当蒸汽压力达到0.5～0.7MPa时，应有什么操作？
