A compact manual pump includes a body, a valve assembly connected with the body, and a first cylinder assembly rotatable with respect to the body. The optical patterns include a plurality of light shielding portions and a plurality of light transmitting portions, each of the portions being located alternately. According to one example embodiment of the inventive subject matter, the teachertest administrator sits down with a student. A total power Ptotal of a feeder on which the benchmarking wind turbines is operated is obtained by enlarging a typical power of each benchmarking wind turbine in proportion according to the quantity of the benchmarking wind turbines operated on the feeder. If K is odd, in ST207-ST212, for sequences that cannot be paired, one of sequence numbers, which are not currently allocated, is allocated.