【单选题】如图5-2所示,在坐标原点0处放置一电量q1=1.6×10-9C的正点电荷,在x1=4 m处P点的电场强度大小E1=0.9 V/m;今在x2=2 m处再放置第二个点电荷q2,测得P处总的电场强度大小E2=1.8 V/m,方向沿x轴负方向,则( )
【简答题】标量场 在点 P(1,-1,0) 处沿方向 = 的方向导数最大,其最大值为 。
【单选题】Later, as one went on to apply more important jobs, one was advised to include in the letter______.
A.
something that would attract attention to one' s application
B.
a personal opinion about the organization one was trying to join
C.
something that would offend the person reading it
D.
a lie that one could easily get with telling
【多选题】下面说法正确的是( )
A.
电梯限位开关动作后,切断危险方向运行,但可以反向运行
B.
计算机的工作过程就是周而复始地获取指令和执行指令的过程
C.
电梯进入消防运行时,安全触板及光电装置不起作用
D.
电梯施工单位是指从事电梯制造、安装、改造、维修和日常维护保养的单位
【多选题】Change just one letter in each word to find a familiar phrase MALE FOOD
【简答题】A physical change doesn’t really change the matter which just moves from one s______ to another.
【单选题】根据《合伙企业法》的规定,下列关于入伙和退伙的说法中,正确的是( )
B.
新合伙人对入伙前合伙企业的债务不承担连带责任
C.
退伙人对退伙前发生的合伙企业债务仍承担无限连带责任
D.
合伙人因故意成重大过失给合伙企业造成揭失的,发生当然退伙
【判断题】电梯进入消防运行时,安全触板及光电装置可以起作用。()
【单选题】—Which shirt will you take, the white one or the blue one? — _______ , just for a change.
【简答题】Change just one letter in each word to find a familiar phrase. MALE FOOD