Please select the most similar patent number from A, B, C and D. Which number is?
A pilot and a train. The pilot comprises an energy absorption obstacle deflector (1); the energy absorption obstacle deflector (1) comprises a fixed housing (111), a sliding cover (112), and an energy absorption unit (12); the fixed housing (111) and the sliding cover (112) define a closed accommodation space (110); the sliding cover (112) is telescopically connected to the fixed housing (111) for deflecting an obstacle. The energy absorption unit (12) is located in the accommodation space (110); the sliding cover (112) is telescopically connected to the fixed housing (111); at the time of a collision, the sliding cover (112) can slide to be cushioned to avoid deformation of the sliding cover (112) due to a rigid collision, and during the sliding process, the sliding cover (112) enables the energy absorption unit (12) to abut against the sliding cover (112) to also absorb the damage energy transmitted by the sliding cover (112).
A: The utility model relates to a sealed container, comprising a container and a container cover. The container cover comprises a cover body; the lower side of the cover body is provided with a movable base; elastic sealing members are provided between the movable base and the cover body; the elastic sealing members are connected to the cover body or the movable base; when the movable base is moved upward, the outer edges of the elastic sealing members are deformed outward, so that the elastic sealing members form sealing portions between the movable base and the container, to seal the container cover and the container; the upper side of the container cover is provided with an opening and closing mechanism for opening and closing the container cover; the opening and closing mechanism comprises a rotary switch and a sliding cover; during the rotation of the rotary switch, the movable base moves up and down, the outside of the rotary switch is provided with a sliding cover in a sliding connection manner; the sliding cover can slide out of the rotary switch. In this way, in the process of opening and closing the cover, the arm length of the rotating rotary switch can be increased by means of the sliding cover to form a labor-saving lever, so that it is more convenient and easier to open and close the container, and the container can also bear a greater pressure and achieve sealing of the container having a larger caliber.
B: A film sticking apparatus, comprising a protective film (200), a base (110) and a sliding assembly; the protective film (200) comprises a positioning layer (210), a protective layer (220) and a release layer(230) which are sequentially stacked; one end of the positioning layer (210) protrudes out of the protective layer (220) to form a positioning end (211); one end of the release layer(230) protrudes out of the protective layer (220) to form a fixing end (231); the positioning end (211) and the fixing end (231) are located on the same side of the protective layer (220); the base (110) comprises an accommodating portion (112) for accommodating an electronic device and a positioning portion (111) located at one end of the accommodating portion (112); the positioning end (211) is fixedly connected to the positioning portion (111); the sliding assembly comprises a sliding member (130) and a dust sticking member (140); the sliding member (130) comprises a body (133) and a first sliding arm (131) and a second sliding arm (132) provided at two ends of the body (133); the first sliding arm (131) and the second sliding arm (132) are detachably and slidably connected to the base (110); the dust sticking member (140) is fixedly provided on the side of the body (133) facing the base (110); and the fixing end (231) is fixedly connected to the body (133). The present invention also relates to a film sticking method. The device and method can prevent impurities from falling on the protective layer (220) or the electronic device during film sticking, and solve the problem of unsmooth air exhaust during the process of sticking the protective film (200) to the screen of a mobile phone, thereby bringing better film sticking experience to a user.
C: An electronic lock (10) used on a door. The electronic lock (10) comprises: a casing (100), a securing base (300), a lock cylinder (400), and a latching hook (500). The casing (100) comprises a casing body (110) and a sliding portion (120). The casing body (110) is connected to the sliding portion (120). The casing body (110) is provided with a first engagement hole (112). The securing base (300) is provided with a connection hole (310) and an accommodating hole (330). The connection hole (310) comprises a first portion (312) and a second portion (314). The first portion (312) communicates with the second portion (314). The sliding portion (120) can be placed within the first portion (312) to form a sliding connection with the securing base (300). The sliding portion (120) can be placed within the second portion (314) to form a rotational connection with the securing base (300). The securing base (300) is used for securing on a door. The lock cylinder (400) is provided on the securing base (300). The latching hook (500) is inserted through the accommodating hole (330). The latching hook (500) is movably connected to the lock cylinder (400). The latching hook (500) can be engagingly inserted into the first engagement hole (112).
D: A collision energy absorption apparatus for rail vehicles, comprising a connection member (2), a base (3), and an energy-absorption splitting tube (1) provided on the outer side in the radial direction of the connection member (2). The inner wall and outer wall of the energy-absorption splitting tube (1) comprises one or more pairs of slits (11) having radial positions corresponding to each other. Each pair of slits (11) comprises an inner slit (111) and an outer slit (112). Each slit is a non-closed linear slit. The slit has a width of 0.05-0.8 mm. The sum of the depths of each pair of slits is less than the wall thickness of the energy-absorption splitting tube. The collision energy absorption apparatus for rail vehicles can obviously reduce the peak of an initial impact force; the effective stroke of the collision energy absorption apparatus can theoretically reach 100%. Moreover, the collision energy absorption apparatus can be easily mounted on either end of a rail vehicle to dissipate kinetic energy during a vehicle collision.
Answer: D