问题
选择题
—Is he your uncle, Jim?
—Yes, ___________. He is a great cook..[ ]
A. he is
B. he isn’t
C. it is
D. it isn’t
答案
答案：A
搜题请搜索小程序“爱下问搜题”
—Is he your uncle, Jim?
—Yes, ___________. He is a great cook..[ ]
A. he is
B. he isn’t
C. it is
D. it isn’t
答案：A
sin100πt （V）的 正弦交流电源，图中电流表内阻不计．副线圈接入“110V，60W”灯泡一只，且灯光正常发光．下列说法正确的是（ ）
/22 A