【单选题】______________ is a point midway between the forward and the after perpendicular.
【判断题】If u and v are perpendicular unit vectors then ||u-v||= .
【单选题】A2 题型 某采用胰岛素治疗的糖尿病患者准备在注射胰岛素半小时后进行爬山运动,此时适宜的注射部位是
【多选题】298 K, Li + ( aq ) + e −→ Li ( s ) 的标准电极电势为 -3.05 V, 则下面反应在298 K时
A.
Li ( s ) −→ Li + ( aq )+ e E ⊖ = +3.05 V
B.
Li ( s ) −→ Li + ( aq )+ e E ⊖ = -3.05 V
C.
2Li + ( aq ) + 2e −→ 2Li ( s ) E ⊖ = -7.10 V
D.
2Li + ( aq ) + 2e −→ 2Li ( s ) E ⊖ = -3.05 V
【判断题】If u=(1,1,1) is perpendicular to v and w, then v is parallel to w.
【单选题】以下各项中,不属于个人信用贷款特点的是( )。
【单选题】某采用胰岛素治疗的糖尿病患者准备在注射胰岛素半小时后进行爬山运动,此时适宜的注射部位是 A、大腿外侧 B、腹部 C、前臂 D、上臂 E、臀部
【判断题】A V-perpendicular line is perpendicular to the frontal plane of projection, and inclined to the horizontal plane of projecton and the profile plane of projection.
【判断题】If u is perpendicular to v and w, then u is perpendicular to v+2w.