【判断题】施工现场设置项目经理部,有利于各项管理工作的顺利进行。
【单选题】已知电路如图所示,对称三相电源线电压为380V,Z=6.4+j4.8W, Zl=6.4+j4.8W,则负载Z的相电压UP、线电压UL和相电流为IP为( )。【图片】
A.
U P = 137 V , U L = 137 V , I P = 17 A
B.
U P = 237 V , U L = 237 V , I P = 17 A
C.
U P = 137 V , U L = 237 V , I P = 17 A
D.
U P = 237 V , U L = 137 V , I P = 17 A
【判断题】【机电-机械】当工件卡在模具中时,可以用手将工件取出。
【单选题】My grandpa told a good story, but I told a ______ one.
【判断题】流通就要打破原有社会对人与人之间的间隔()
【判断题】当工件卡在模具中时,可以用手将工件取出。
【判断题】当工件卡在模具中时,可以用手将工件取出。
【简答题】图2所示电路中,R=( ) 时能获得最大功率,其最大功率为( )W。__________
【判断题】当工件卡在模具中时,可以用手将工件取出。( )
【单选题】When Grandpa told the writer to pick up potatoes if he wanted to do that, he meant that _________.
B.
he could do it if he wanted to
C.
he could do it anytime he was ready
D.
he did not really have to do so