断电器触点间隙增大,则点火提前角就()
A.减小
B.增大
C.保持不变
D.以上说法都不完整
参考答案:B
Susan isn't here now. She _______ to England. She will come back next month. [ ]
A. will go
B. has gone
C. goes
D. went
简述急性胰腺炎超声声像图表现。