下列说法中正确的是（ ）
A．控制灯泡亮与不亮的开关必须与灯泡并联
B．一个家庭中所有用电器都是串联在一起的
C．电视与录像机之间是并联关系
D．闭合教室的一个开关．三盏灯同时亮了，当断开那个开关时，三盏灯又一起灭了，由此可以断定三盏灯是串联的
A、开关必须与控制的灯泡串联；故A选项错误；
B、在家庭电路中，为了使用方便，即各个用电器都是相互影响，故家庭电路中，各用电器都是并联；故B选项错误；
C、电视与录像机是两个相互影响用电器，则是并联关系；故C选项正确．
D、教室的三盏灯是一个开关控制，但每一个灯都可以单独工作，当其中一个灯坏了，并不影响另一个灯的工作，因此可以断定三盏灯是并联，故D选项错误．
故选 C．
Opening week specials at Munchies Food Hall. At the corner of Green and Brown Streets in the city Monday 7th of January until Sunday.13rd of January 2008
●Delicious noodle dishes ●plump porky chips ●seafood specialties ●crunchy vegetables ●sweet tropical fruit Halal food is available at the stall. Malay Mood Heaven Win Prizes and Gifts! Spend ＄20.00 or more and win instant prizes from our lucky draw box. Collect a free party balloon and whistle for each young diner. Enjoy a free meal if you are the first customer of the day at any of our stalls. Win a holiday to Western Australia. A free raffle ticket is given with every receipt. Just fill in your information and place your entry in the box provided. Winner to be announced in The strait Times on the 15th of January. Join in the Fun! Between 7:00 pm and 8:00 pm each evening until the 15th of January, your favorite Channel 3 television actors and singers will entertain you: ●May Lee ●Jackie Chen ●Kim Yap ● Kamala Autograph sessions will follow each performance! And who will be our extra special mystery star? Come down on Saturday at noon to find out. 68. Munchies Food Hall does NOT sell ____. A. lamb B. beef C. pork D. chicken 69. The prices at Munchies are ____. A. lower than usual B. bargain prices for the opening C. lower far two people D. lower of you spending ＄21.00 70. Everyone who eats at Munchies will receive a ______. A. free raffle ticket B. lucky draw coupon C. free meal D. balloon and whistle 71. I will find out who has won the top to Western Australia when I ______. A. watch Channel 3 television B. come down to Munchies at noon C. read The Straits Times on the 5th of January D. attend the lucky draw at Munchies Food Hall |