单项选择题
A.0-1B.1-100C.0-FD.0-255
A.pageB.paginationC.changeD.autoplay
A.ActionXB.ObserverC.ObservbleD.Subscriber
A.subscribe()B.subscribe(observer)C.subscriber()D.subscribe(subscriber)
A.just(T...)B.subscribeC.from(T[])D.create
A.from(T...)B.from(T[])C.from(Iterable< ?extends T>)D.from(OnSubscribe)
A.createB.onNextC.onErrorD.onCompleted
A.onErrorB.onNextC.onCompletedD.OnClick
A.onNextB.onCompletedC.onErrorD.onEvent
A.可观察者,即被观察者B.观察者C.订阅D.事件
A.View,OnClickListenerB.OnClickListener,OnClickListenerC.View,ViewD.OnClickListener,View