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There is an opening at the lower part, and there is a fan inside, which can be rotated to eject water when in use.(1) The utility model provides a low-temperature stop valve, wherein a guide sleeve is added at the valve disc, and is fixed by bolts and elastic pads, so as to position and guide the seal of the valve; ;The path is shown in the following figure:Extraction structure or pattern: It is often necessary to store the knowledge, extraction structure or pattern in the professional field in a better way. For example, expert developers make good use of design patterns.No. 97 Amy JacksonLet's start from the beginning. MotionEvent.ACTION_DOWN was introduced before. What is mFirstTouchTarget? The following code indicates that when the ViewGroup click event is consumed by the sub-View, the mFirstTouchTarget will point to the sub-View. Therefore, if the event is consumed by the View or is an ACTION_DOWN event, then access the ViewGroup's onInterceptTouchEvent, and if not, it is all intercepted by the current ViewGroup. In other words, if the View decides to intercept events, then this sequence of events will be handled by the View.