Please select the most similar patent number from A, B, C and D. Which number is?
A mountable fireproof plate and a fixing structure thereof, comprising: a support member (2), a positioning mounting piece (3), a fireproof plate (5), and a positioning mounting pipe (6), wherein the support member (2) is installed inside a wall (1) and is fixedly connected to one end of the positioning mounting piece (3) through a bolt (4), the other end of the positioning mounting piece (3) fits with and is inserted into the positioning mounting pipe (6), and the positioning mounting pipe (6) is fixedly connected to the fireproof plate (5). The fireproof plate (5) comprises a base plate layer (51), a single plate reinforcement layer (53) and a surface plate layer (55). The mountable fireproof plate can be conveniently mounted and removed without damaging the fireproof plate, has the appearance of wood, and provides good fire protection performance. The surface of the fireproof plate does not need to be processed with spray paint, does not release formaldehyde, reducing air pollution, and provides excellent sound and heat insulation.
A: A fire protection structure applied to a segment joint of an immersed tunnel and having a linear moving mechanism comprises a watertight band assembly (10) and a fire protection assembly (30) that are connected between two adjacent tunnel segments (40, 50) and spaced apart from each other. The fire protection assembly (30) is positioned at an inner side of the watertight band assembly (10). The fire protection assembly (30) comprises: a protection plate assembly (31), comprising a first fire protection plate assembly (311) and a second fire protection plate assembly (313) that are spaced apart from each other and a heat insulation member (312) fixed therebetween; a movable connecting assembly (33), the first fire protection plate assembly (311) and the second fire protection plate assembly (313) being movably connected to the second tunnel segment (50) by means of the movable connecting assembly (33); and a flexible fire protection band (35), positioned between the first fire protection plate assembly (311) and the second fire protection plate assembly (313), wherein one end of the flexible fire protection band (35) is connected to the heat insulation member (312), and the other end thereof is connected to the second tunnel segment (50).
B: A structure for connecting a pillar of an aluminum alloy house to a wallboard, a door and a window. The structure comprises an aluminum alloy pillar (13), an aluminum alloy door or window frame (8), an aluminum alloy door or window sash (10), a C-shaped steel frame member (20), an aluminum alloy exterior wallboard (19), an aluminum alloy wallboard assembling frame (3) and an aluminum alloy door and window subframe (6). The aluminum alloy wallboard assembling frame (3), the aluminum alloy exterior wallboard (19), the C-shaped steel frame member (20), a heat-insulating fire-resistant calcium silicate board (2) and an interior decorative panel (1) are combined to form a modular assembled wallboard. The modular assembled wallboard fastens the aluminum alloy wallboard assembling frame (3) onto the aluminum alloy pillar (13) through a fastener. The aluminum alloy door and window subframe (6) is provided with a waterproof groove (5) therein. The aluminum alloy door and window subframe (6) is connected to the aluminum alloy door or window frame (8) pre-installed with the aluminum alloy door or window sash (10) through a fastener. The structure has an easy connection, short construction period, convenient installation, and good effects of heat insulation and preservation, sound insulation, water resistance, and fire resistance.
C: A structure with a detailed log wall decorative surface comprises an interior decorative plate (10), a first structural plate (1), a light-steel support member (2), a second structural plate (3), a support member (5) and an exterior decorative plate (6) which are sequentially arranged from inside to outside. The surface of the exterior decorative plate (6) is provided with continuous circular, semi-circular or protruding columns. The support member (5), the second structural plate (3) and the light-steel support member (2) are fixed together by means of a plurality of first self-tapping screws (7). The exterior decorative plate (6) is fixed to the support member (5) by means of a plurality of second self-tapping screws (8). The second self-tapping screws (8) are located between two adjacent columns, and the exterior decorative plate (6) is parallel or perpendicular to the support member (5). The decorative surface structure of the log wall adopts a whole-piece molding process, and has the advantages of light weight, quick installation, high application efficiency, and good fire protection performance.
D: A car and a vehicle body. The car comprises a car body (10). The car body (10) comprises a first side wall (110) and a second side wall (120) adjacent to each other. An electrical cabinet is disposed in the car body (10) and located at a joint between the first side wall (110) and the second side wall (120). A fireproof cabinet (200) is connected to the car body (10) and provided over the outer side of the electrical cabinet. The fireproof cabinet (200) is made of fireproof composite boards which comprise fireproof boards (310), first aluminum plates (320), light-core rigid boards (330) and second aluminum boards (340), wherein the fireproof boards (310) face away from the electrical cabinet. Since the fireproof cabinet (20) is arranged on the outer side of the electrical cabinet, the electrical cabinet itself does not have to be fireproof. The periphery of the fireproof cabinet (20) is connected to the car body (10) such that the fireproof cabinet and the car body (10) form a closed space to guarantee the fireproof capability. The fireproof cabinet (20) is made of fireproof composite boards, which are lighter, do not generate harmful gas and are more environmentally friendly compared to simple fireproof boards.
Answer: C