试题详情

The government will（ ）a reform in the educational system.

The new system, which should be in use by the end of this month, will replace the current one.(2.0)

The Nitrogen Generation System reduces the oxygen content of the air mixture in the center tank to a

not install the rigging pin, the elevators will move down when there is no pressure in the system.

In the Canadian parliamentary system，( )holds the highest position.