Please select the most similar patent number from A, B, C and D. Which number is?
A device for drinking water comprises a main body (1). The main body (1) comprises a base (11) provided with anti-slip pads (6), and the anti-slip pads (6) are to be in contact with a placement location, so that the device for drinking water will not easily slip when placed via the base, and is stably placed.
A: Disclosed is a die fixing apparatus for a numerical control machine tool, the die fixing apparatus relating to the technical field of numerical control machining and comprising a bottom plate (1), wherein the center of the bottom plate (1) is connected to an air pipe (2) in an inserted manner; one end, away from the bottom plate (1), of the air pipe (2) is fixedly connected to a vacuum pump (3); an upper surface of the bottom plate (1) is provided with an anti-slip pad (4); an upper surface of the anti-slip pad (4) is fixedly connected to a suction cup (5); a suction hole (6) is provided inside the suction cup (5); one end, away from the vacuum pump (3), of the air pipe (2) is fixedly connected inside the suction hole (6); an outer surface of the suction cup (5) is fixedly connected to a fixing plate (7); the bottom of the fixing plate (7) overlaps the upper surface of the anti-slip pad (4); an upper surface of the suction cup (5) is provided with a fixing clamp groove (8); the fixing plate (7) is provided with a fixing clamp block (9) adapted to the fixing clamp groove (8); and an inner side of the fixing plate (7) is fixedly connected to an anti-slip plate (10). By means of the configuration of the air pipe, the fixing plate, the fixing clamp groove, the anti-slip plate, etc., the fixing apparatus can enhance the fixing effect and avoid a side face or the bottom of a workpiece being abraded by the apparatus during fixation; and by means of the configuration of a rubber plug, quick corrosion caused by a third screw and a third screw hole being immersed by a cooling liquid can be reduced.
B: A device for drinking water comprises a main body (1) and a valve (2) which are detachably fixed. The main body (1) and the valve (2) are fixed in a detachable fixing mode, facilitating inspection and cleaning when a channel between the main body (1) and the valve (2) for transporting liquid is blocked.
C: A decorative lamp, comprising a housing (1), a circuit board (2) fixed inside the housing (1), a bottle (4) fixed on the housing (1) and internally provided with a liquid, and a base (3) fixed at the bottom of the housing (1); the base (3) being larger than the bottom of the housing (1). The decorative lamp comprises a housing (1), a circuit board (2) fixed inside the housing (1), a bottle (4) fixed on the housing (1) and internally provided with a liquid, and a base (3) fixed at the bottom of the housing (1); thus when placing the decorative lamp, the base (3) makes contact with the placement position and the base (3) is larger than the bottom of the housing (1); in this way, stability is increased during placement of the decorative lamp and the decorative lamp is stable when placed, preventing it from damage when being placed.
D: A hand-cranked music box comprising a housing (1), a sound cylinder provided with multiple protrusions, sound plates fitted with the sound cylinder, and a transmission gear fixed at one extremity of the sound cylinder, also comprising a crank handle (2) provided with a drive gear, where the drive gear is meshed with the transmission gear. An anti-slip pad (3) is provided at the bottom of the housing (1). Because the anti-slip pad (3) is provided at the bottom of the housing (1), the hand-cranked music box is not prone to slipping when being placed and is not prone to being damaged, thus allowing the hand-cranked music box to be placed stably, thereby preventing damages. When a user cranks the crank handle (2), the drive gear drives the transmission gear to drive the sound cylinder into rotation, and the protrusions on the sound cylinder generate vibrations with the sound plates to generate sounds, thus producing music.
Answer: B