当使用龙门式举升机将车辆举升至所需高度时需对举升机进行锁止,确认车辆支撑可靠后方可开始车底作业。
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使用交直流钳形电流表测量电流时需将线路剪断,然后将表串联接入线路中。
A. 对
B. 错
检查高压线束时需佩戴绝缘手套和护目镜,检查车底高压线束时还需佩戴安全帽。
A. 对
B. 错
使用扭矩扳手前,先将需要的实际拧紧扭矩值预置到扳手上。
A. 对
B. 错
__________children wishing they were grown up, and old people wishing they were young again.
A. What often one hears
B. How one hears often
C. How often one hears
D. What one often hears
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