许可人在完成所内停电，检电，接地封线等安全措施后还应：会同工作执行人检查安全措施，以（）检修设备确无电压。
参考答案：手触试证明
单句改错(每句均有一处错误)。
( ) 1. The boy fell from the bike yesterday.
( ) 2. Let's go cross the street together.
( ) 3. My sister watched TV at seven yesterday evening.
( ) 4. The boy got up lately this morning.
( ) 5. In the fact I know nothing about the accident.
当采掘工作面气温较高时，从煤岩壁渗出的积水就会被蒸发而形成雾气。
