若P(x,y)的坐标满足xy=0,则P点位于( )A. 原点上 B. x轴上 发布时间:2017-05-12 05:41 │ 来源:www.tikuol.com 题型:选择题 问题: 若P(x,y)的坐标满足xy=0,则P点位于( )A. 原点上 B. x轴上 C. y轴上D. 坐标轴上
题型:选择题 (A)Sunny English ClubFor students16:00 ~ 18:00 Every Friday200 yuan a month9 Zhou Yu StreetTel: 3786290Foreign teachers, English songs and films and more!Ocean Museum9:00~17:00 From Thursday to Sundayticket: 50 yuan132 Xue Yuan StreetTel: 5439871Show you a full picture of sea lives!Health Centre9:00 ~ 17:0016 Yong Le StreetTel: 3801451Free examinations for those over(超过) 70. Give you good advice(建议) to keep healthy(健康)!小题1:Sunny English Club is for .A.nursesB.policemenC.doctorsD.students小题2:How much do you pay(支付) if (如果)you want to stay in the English club for a year?A. 300 yuan B. 600 yuan C. 1,200 yuan D. 2,400 yuan【小3】You can visit Ocean Museum .A. on Tuesday B. on Wednesday C. on Monday D. on Sunday小题3:You can get free examinations(体检) in Health Centre if you are .A.73B.67C.17D.9小题4:If you are interested in the life of fish, you should go to .A.Health CentreB.Ocean Museum C.Sunny English Club D.16 Yong Le Street 查看答案
题型:选择题 有一斜面高h=1米,长L=4米,重200牛的重物在沿光滑斜面向上的拉力F的作用下,匀速到达斜面顶端,根据功的原理。F=____牛,斜面对重物的摩擦力为____牛,如果斜面高度不变,要使拉力更小些,则必须使斜面的长度____(选填“变大”、“变小”或“保持不变”)。 查看答案