问题
选择题
Children are all enjoying themselves on____ [ ]
A. Children's Day
B. Child Day
C. Children Day
D. Child's Day
答案
答案：A
搜题请搜索小程序“爱下问搜题”
Children are all enjoying themselves on____ [ ]
A. Children's Day
B. Child Day
C. Children Day
D. Child's Day
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