【多选题】关于使用模拟式万用表进行直流电流测试的方法,下列叙述正确的是( )。
A.
将万用表的选择开关置于“直流电流档”,根据被测电流预估值选择合适的量程
B.
若不能预估电流值范围,应先将量程选择开关置于最小档测量后再调整量程
D.
测试操作之前先断开电源,待表笔接好后,再通电源,测量完后,电路要还原
【单选题】听力原文:Beloved Ladies, Gentlemen and Friends, First of all, let me on behalf of our company to extend a warm welcome to the members of the American Delegation who have been invited to this country and t...
B.
promote the rapid development of the business relations
C.
change Tianjing's future
【单选题】巩固和发展公有制经济,还要努力寻找能够极大促进生产力发展的公有制实现形式。我国现阶段公有制的主要实现形式应当是
【单选题】The new colleague____to have worked in several big corporations before he joined our company.
【单选题】The new colleague____to have worked in several big corporations before he joined our company.
【单选题】When ___our culture with those of other countries, we find ours is quite different.
【多选题】巩固和发展公有制经济,要努力寻找能够极大促进生产力发展的公有制实现形式,使股份制成为公有制的主要实现形式。实行股份制,有利于
C.
实现转换机制和科学管理,提高企业和资本的运作效率