Abstract: A wet-dry vacuum cleaner device comprising: a housing; a motor-fan assembly mounted in the housing and arranged to generate an air flow between a dirty air inlet and a clean air outlet; a tank arranged to capture liquid entrained in the dirty air flow, the tank comprising a tank inlet in fluid communication with the dirty air inlet and a tank outlet in fluid communication with the motor fan assembly; wherein the tank outlet is in fluid communication with a liquid trap mounted inside the tank arranged to capture liquid entrained in the air flow exiting the tank.

Abstract: The present application discloses example methods, computer-readable mediums, and systems for controlling service operation risks. In one example, method, an application program on an end-user device monitors a service operation initiated by a user for invoking offline service information. After the service operation is monitored, it is determined whether the service operation is a risky operation based on recorded historical operation data and at least one of a predetermined risk evaluation rule or a risk evaluation model. In response to determining that the service operation is a risky operation, a refusal to invoke the offline service information is performed. In response to determining that the service operation is not a risky operation, the offline service information is invoked.

Abstract: The present application discloses example methods, computer-readable mediums, and systems for controlling service operation risks. In one example, method, an application program on an end-user device monitors a service operation initiated by a user for invoking offline service information. After the service operation is monitored, it is determined whether the service operation is a risky operation based on recorded historical operation data and at least one of a predetermined risk evaluation rule or a risk evaluation model. In response to determining that the service operation is a risky operation, a refusal to invoke the offline service information is performed. In response to determining that the service operation is not a risky operation, the offline service information is invoked.

Abstract: The present application discloses example methods, computer-readable mediums, and systems for controlling service operation risks. In one example, method, an application program on an end-user device monitors a service operation initiated by a user for invoking offline service information. After the service operation is monitored, it is determined whether the service operation is a risky operation based on recorded historical operation data and at least one of a predetermined risk evaluation rule or a risk evaluation model. In response to determining that the service operation is a risky operation, a refusal to invoke the offline service information is performed. In response to determining that the service operation is not a risky operation, the offline service information is invoked.

Abstract: A battery cover assembly is using for accommodating a battery therein. The battery cover assembly comprises a housing, a battery cover, and a elastic member. The housing has a depressed portion, a space and a latching trough defined therein. The depressed portion is configured for accommodating the battery therein. The battery cover is configured for covering the depressed portion of the housing. The battery cover has a shaft and a latching portion protruding therefrom. The shaft is corresponding to the space of the housing. The shaft is rotatably held in the space to rotatably latching the battery cover with the housing. The latching portion is corresponding to the latching trough of the housing. The latching portion is latched within the latching trough. The elastic member is fixed between the housing and the battery cover. The elastic member provides an elastic force for rotating the battery cover relative to the housing.

Abstract: A chip card holder used to hold a chip card comprises a housing having a slot defined therein for receiving the chip card therein, and an end wall, the housing including a latching portion extending from the end wall; a holder part slidably assembled in the slot of the housing; an elastic part resisted between the housing and the holder part. The holder part releasably latches to the latching portion, when the latching portion is removed from the holder part, the holder part slides away from the end wall under the expansion of elastic part and push the chip card out of the slot.

Abstract: A battery cover assembly is using for accommodating a battery therein. The battery cover assembly comprises a housing, a battery cover, and a elastic member. The housing has a depressed portion, a space and a latching trough defined therein. The depressed portion is configured for accommodating the battery therein. The battery cover is configured for covering the depressed portion of the housing. The battery cover has a shaft and a latching portion protruding therefrom. The shaft is corresponding to the space of the housing. The shaft is rotatably held in the space to rotatably latching the battery cover with the housing. The latching portion is corresponding to the latching trough of the housing. The latching portion is latched within the latching trough. The elastic member is fixed between the housing and the battery cover. The elastic member provides an elastic force for rotating the battery cover relative to the housing.

Abstract: A chip card holder used to hold a chip card comprises a housing having a slot defined therein for receiving the chip card therein, and an end wall, the housing including a latching portion extending from the end wall; a holder part slidably assembled in the slot of the housing; an elastic part resisted between the housing and the holder part. The holder part releasably latches to the latching portion, when the latching portion is removed from the holder part, the holder part slides away from the end wall under the expansion of elastic part and push the chip card out of the slot.

Abstract: A replaceable panel device (1) includes a panel (20) with a mounting portion (24), a locking subassembly (30), and a top cover (40) with a block (45). The mounting portion has at least one slideway (241), a recess (242), and two locating grooves (243). The locking subassembly is accommodated in the mounting portion of the panel. The locking subassembly has a button (31), an elastic rod (32), and a slider (33). The button has at least one rail (312), a hole (313) defined at top of the rail. The slider has at least one slot (331) and a rabbet (332). The slider is received in the recess. The rail is received through the slideway and the slot. The elastic rod is received through the hole. Ends of the elastic rod are located in the locating grooves. The rabbet engagingly receives the block of the top cover.