【单选题】Let me have a rest,________?
【单选题】— Shall I buy this comic book for Dick? — . He might already have it.
【单选题】Haven't I repeated that you _____ have a holiday on Saturday if you work hard? [ ]
【简答题】题如图所示电路中,Z 1 =(4+j10)Ω,Z 2 =(8-j6)Ω,Z 3 =.33Ω,电源电压相量 求各支路电流相量,并画出电压和各电流相量图。
【单选题】导向系统是用来( )盾构姿态,提供盾构相对于隧道设计轴线的详细偏差信息,便于用户及时纠正盾构的姿态。
【单选题】下列有关图书续借的叙述中,哪一项是不正确的?