Abstract: Embodiments of this specification provide a container-based task execution method and apparatus. The method can be performed by a container management platform. When receiving a task description file that is for a to-be-executed task and that is submitted by a user, the container management platform can determine whether a first identifier of a first image file carried in the description file is in a whitelist, where the first identifier can be added to the whitelist when it is determined that specified executable file information included in the first image file is secure; and if the first identifier is in the whitelist, considers that the to-be-executed task is secure, and can execute the to-be-executed task based on a container group created by using the task description file and the specified executable file information included in the first image file.

Abstract: Embodiments of this specification provide a method and a system for performing service verification on a plurality of parties in federated computation based on a container cluster. In the verification method, a verification management center sends a task establishment request to a master node in response to a service verification request of a user, where the task establishment request indicates at least a target service that is to be verified and that is used by a target participant. The master node creates a verification task of the target service for a target slave node in the target participant based on the task establishment request. The target slave node verifies a target service of the target participant in response to the verification task, to obtain a service verification result. The target slave node provides the service verification result for the verification management center.

Abstract: A fuel cell bipolar flow field plate and a fuel cell stack are provided. The fuel cell bipolar flow field plate includes a first gas channel and a second gas channel. Each of the gas channels has several sub-channels, each of the sub-channels has bending parts, and adjacent sub-channels have opposite flow directions. The sub-channels of the two gas channels form a four-leaf clover type pattern in a reaction area of the fuel cell bipolar flow field plate. A bending angle of each of the bending parts in the four-leaf clover type pattern is within 90 degrees.

Abstract: A fuel cell bipolar flow field plate and a fuel cell stack are provided. The fuel cell bipolar flow field plate includes a first gas channel and a second gas channel. Each of the gas channels has several sub-channels, each of the sub-channels has bending parts, and adjacent sub-channels have opposite flow directions. The sub-channels of the two gas channels form a four-leaf clover type pattern in a reaction area of the fuel cell bipolar flow field plate. A bending angle of each of the bending parts in the four-leaf clover type pattern is within 90 degrees.