液体中某点的绝对压强为129kN/m,则该点的相对压强为()。(平方)
A.20kN/m
B.27kN/m
C.31kN/m
D.35kN/m
参考答案:C
American boys and girls like watching TV. Some children spend six hours a day at school and four to six hours a day in front of the TV sets. Some children even watch TV for eight hours or more on Saturday.
Television(电视)is like books and films . A child can learn good things and bad things from it. Some TV programs help children to understand the news, the people and places from other countries. With TV, children do not have to go out to see films, they can hear interesting music or watch a game at home. But some programs are bad for children, so parents sometimes help them to find other interesting and useful things to do.
小题1:In America, some children spend eight hours or more _____ on Saturday .
A.studying
B.playing games
C.watching TV
D.helping their parents小题2: With TV, children can ________ at home.
A.play football
B.hold a sports meeting
C.see some films
D.have a swim小题3: What does the underlined word “programs” mean?
A.频道
B.节目
C.新闻
D.小品
下列一张报关单中有20个已填(包括空填)栏目(标号A~T),请根据提供的单据指出其中的第三处填制错误。