—Will you come to this dinner party?      

—I won't come unless Jenny _____.[ ]

A. will be invited

B. is invited

C. will invite

D. invited

三相四线有功电能表的接线应注意（）

A.中性线不能接错

B.与中性线对应的端子一定要接牢

C.应按正相序接线

D.应按反相序接线