猜你喜欢
- 1I\'d like to make me happy
- 2-Where do you want to go this weekend?-We want to go to a place___a small river.So we can swim
- 3急已知双曲线x2/a2-y2/b2=1的离心率为根号6/2,椭圆x2/a2+y2/b2=1的离心率为
- 4女孩在山谷里喊了一声,过20秒能听见回音.已知声音的传播速度是每秒340米,女孩离这座山有多少米?
- 5No one can be sure ___ the board will accept our condition A.that B.whether C.why D.what
- 61吨煤产多少蒸汽
- 7已知AB是⊙O的直径,AC、AD是⊙O的两弦,已知AB=16,AC=8,AD=83,求∠DAC的度数.
- 8白居易的诗《琵琶行》里的行读音是什么?
- 9甲乙两人共同加工一批零件,经过4小时完成任务,甲如果单独加工这批零件要用7小时,乙每小时可价格同60个零件,这批零件一共有多少个?
- 10若函数y=f(x)定义域为R,满足f(x+1)=-f(x),怎样判断它的周期