【单选题】大电流接地系统中,任何一点发生单相接地时,零序电流等于通过故障点电流的( )。
【单选题】Which one is not the most useful categories in term of informative speeches?
A.
speeches about objects.
B.
speeches about processes.
C.
speeches about events.
D.
speeches about spirits.
【判断题】工业废水样品应在企业的车间排放口采样。()
【单选题】Which of the following is most likely to be written as an informative report?
A.
A recommendation from the Information Technology Department that your company install a wireless network
B.
A feasibility study addressing tuition reimbursement to all employees
C.
A comparison of five handheld communication devices that your company might purchase
D.
A summary of information presented at a recent conference for technical writers.
【简答题】当每日栅渣量大于_______ /d 时,采用机械清渣。
【单选题】假定羊肉供给不变,牛肉供给减少,这将导致( )
【单选题】大电流接地系统中,任何一点发生单相接地时,零序电流等于通过故障点电流的( )
【单选题】假定羊肉供给不变,牛肉供给减少,这将导致( )。
【单选题】大电流接地系统中,任何一点发生单相接地时,零序电流等于通过故障点电流的()。
【单选题】大电流接地系统中,任何一点发生单相接地时,零序电流等于通过故障点电流的()。