【单选题】Kwanzaa is a holiday celebrated by many African Americans from December 26 to January 1. It pays tribute to the rich cultural roots of Americans of African ancestry, and celebrates family, community,a...
A.
the first song of the month
B.
the first corn of the harvest
C.
the first dance of the night
D.
the first fruits of the harvest
【单选题】It pays in the long ____ to introduce new techniques.
【单选题】把一个交流电流i和一个直流I分别通过电阻值相同的电阻R,在相同的时间内,如果它们在电阻上产生的热效应相当,则该 直流电流I的值为对应交流电i的:
【单选题】下列协议中,在无线网络中用于进行信道共享的协议是哪个?
【单选题】Kwanzaa is a holiday celebrated by many African Americans from December 26 to January 1. It pays tribute to the rich cultural roots of Americans of African ancestry, and celebrates family, community,a...
A.
celebrate African Americans’harvesting skills.
B.
honor Dr.Maulana Karenga.
C.
encourage African Americans to think about their roots.
D.
light the individual candles of the kinara.
【单选题】Kwanzaa is a holiday celebrated by many African Americans from December 26 to January 1. It pays tribute to the rich cultural roots of Americans of African ancestry, and celebrates family, community,a...
【单选题】It pays ______ to buy goods of high quality.
【单选题】It pays______the long run to buy goods of high quality.
【单选题】禁止某些IP段的匿名用户访问FTP服务器,需要对ftp服务主配置文件添加哪些命令字段?
C.
anon_upload_enable=YES
【单选题】一个交流电流i和一个直流I分别通过电阻值相同的电阻R,在相同的时间内,如果它们在电阻上产生的热效应相当,则该 直流电流I的值为对应交流电i的(A)