协保人员生活费补贴申请需向()提出申请。
A.区职业介绍所
B.就业援助员
C.街道(乡镇)就业服务机构
D.协保单位
参考答案:D
That Jill was worried seemed _____ to everyone present at the meeting.
A.constant
B.evident
C.previous
D.rough
某LC振荡电路中,振荡电流的变化规律为
i=0.14sin(1 000 t)A,已知回路中线圈的自感系数L="50" mH,则电容器的电容C=_________F,该振荡电流的有效值为_________A.
图14-2-9