21. The single or multistage rocket without the payload is referred to as a launch vehicle. 22. Each feedpump is a multistage centrifugal pump producing 150 l / s at 21 MPa. 23. Later he developed the multistage test, consisting of several stages of progressively greater workloads. 24. North Korea fired a multistage rocket over Japan last August, saying it launched a satellite. 25. Parts of the multistage event have been held in countries neighboring France but never outside Europe. 26. Multistage depressed collectors enhance the energy recovery by " sorting " the electrons in energy bins.27. There are two main types or setups of a coilgun : single-stage and multistage . 28. A multistage coilgun uses several electromagnets in succession to progressively increase the speed of the projectile. 29. In order to write dynamic programming equations, consider the above multistage problem backward in time. 30. Pacer Test is a multistage aerobic capacity test that progressively gets more difficult as it continues.