Abstract: A program testing method is provided. The method includes receiving a test account adding instruction the test account adding instruction identifying a second test account, acquiring a first target code corresponding to a target program in response to the test account adding instruction, the first target code corresponding to a first page, a first test account being logged in on the first page, and the first page being generated according to the first target code, generating a second page corresponding to the second test account according to the first target code, and interacting through the first page and the second page to test the target program. Apparatus and computer-readable medium counterpart embodiments are also provided.

Abstract: A nuclear reactor includes a reactor container, a reactor core, a control drum assembly, a hot channel, a heat exchanger and a main pump. The reactor container contains a coolant; the reactor core is arranged at a lower middle part of the reactor container; the control drum assembly is arranged on an outer periphery of the reactor core, and includes control drums arranged at intervals along a peripheral direction of the reactor core; the hot channel is arranged in the reactor container and located above the reactor core. The hot channel has a bottom hermetically connected to the control drum assembly and a top hermetically connected to an inner top surface of the reactor container. The hot channel has a hot pool passage for the coolant to pass through. The heat exchanger is arranged in the reactor container and located on an outer periphery of the hot channel.