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298 results about "Choice test" patented technology

Multiple choice test questions, also known as items, can be an effective and efficient way to assess learning outcomes. Multiple choice test items have several potential advantages: Versatility: Multiple choice test items can be written to assess various levels of learning outcomes, from basic recall to application, analysis, and evaluation.

Full-automatic testing device of open type portable motor driver

The invention relates to a full-automatic testing device of an open type portable motor driver, comprising a man-machine interaction unit, a master control unit and an interface unit which are sequentially connected in series; the interface unit is connected with an external interface of the motor driver; a tester adopts self-created scripting language to encode a testing flow scripting file which is stored in the master control unit according to testing requirements; the man-machine interaction unit is used for choosing testing items and displaying testing results; the master control unit finds the corresponding testing instruction in the pre-stored testing flow scripting file according to the chosen testing item information, the instruction is transferred to generate an excitation signal which controls the motor driver by the interface unit, and operating information fed back by the driver is received and is analyzed and processed to obtain the testing results which are fed back to the man-machine interaction unit. The full-automatic testing device can automatically, rapidly and effectively test the function and property of the motor driver, the operation is convenient, the expansibility of the device is strong, the structure is simple and the movement is flexible.
Owner:HUAZHONG UNIV OF SCI & TECH

Method for evaluating swimming ability of fishes and application

The invention discloses a method for evaluating the swimming ability of fishes and application of the method in the fish passage facility design. The method comprises the steps that (1) fishes are selected as a target; (2) a test water channel is selected; (3) the sensing flow velocities of the fishes are tested, wherein the total length index, the body length index and the weight index of each fish are recorded, and temporary rearing continues; (4) the critical swimming speeds of the fishes are tested; (5) the onrush swimming speeds of the fishes are tested, wherein the total length index, the body length index and the weight index of each fish are recorded, and the onrush swimming speeds of the fishes are calculated; (6) repeated testing is carried out; (7) statistics is carried out on swimming speed test results, wherein the median of the sensing flow velocities, obtained through repeated testing, of the target fishes, the median of the critical swimming speeds, obtained through repeated testing, of the target fishes, and the median of the onrush swimming speeds, obtained through repeated testing, of the target fishes are calculated; (8) the range of the continuing swimming speeds, the range of durable swimming speeds and the range of the outburst swimming speeds are obtained in a short time, comprehensive evaluation is carried out on the swimming speeds of the fishes, and the maximum flow velocity of a main body structure, the fish luring flow velocity of an inlet, and the range of the flow velocities of an outlet in the fish passage facility design are determined.
Owner:WATER ENG ECOLOGICAL INST CHINESE ACAD OF SCI
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