函数y=|sinx|的最小正周期是( ) A.π4 B.π C.π2 D.2π 发布时间:2017-04-18 01:21 │ 来源:www.tikuol.com 题型:选择题 问题: 函数y=|sinx|的最小正周期是( )A.π4B.πC.π2D.2π
题型:选择题 下列论述中,正确的是()。A.在评估中如遇到在役设备的零件带有裂纹,则可判断此设备已丧失使用价值B.机器零件的疲劳断裂过程,大致可分为微观裂纹扩展、宏观裂纹扩展、急剧裂纹扩展及断裂四个阶段C.影响裂纹扩展的主要参数是应力强度因子幅度AKD.在应力强度因子幅度较低时,加载频率对裂纹的疲劳扩展速度影响较大 查看答案
题型:选择题 Tom grows the nicest vegetables and fruits and the most beautiful flowers in the village. Plants grow in Tom’s garden all through the __1__ and they are much __2__.Tom cuts some flowers for his sitting room table, eats some fruits and vegetables, but he __3__ most of them in the market. His vegetables, fruit and flowers are so __4__ and beautiful that they sold much more __5__ in the market than those of other villagers.How does Tom grow these beautiful things? He is so __6__ that he just sits under his orange tree with his radio. He __7__ the music all day.That is quite true. Tom __8__ things in spring, summer, autumn and winter. After that he sits with his radio. And everything __9__. It is the music that does the work. Tom knows more clearly that music makes the biggest vegetables and the most beautiful flowers. Plants love __10__ as much as people.小题1:A.weekB.monthC.seasonD.year小题2:A.betterB.worseC.lessD.later小题3:A.buysB.sellsC.borrowsD.lends小题4:A.dearB.badC.bigD.small小题5:A.politelyB.quicklyC.slowlyD.carefully小题6:A.angryB.busyC.tiredD.lazy小题7:A.listens toB.hearsC.watchesD.speaks小题8:A.fillsB.plantsC.throwsD.makes小题9:A.doesB.moves C.growsD.plays小题10:A.workB.rainC.storiesD.music 查看答案