Zhanjiang-Guangzhou high-speed railway will be opened in 20 15, and it only takes us more than two hours from Zhanjiang to Guangzhou by bullet train. (1) is on the high-speed rail.

(1) On the moving train, the position of the table is still relative to the seat; The book on the desktop can stand still, because it is acted by a balancing force.

(2) Turn off the power supply before the high-speed car enters the station, because the inertia car is still driving at high speed, and it has to travel a certain distance forward.

(3) "Regenerative braking" technology, in the process of deceleration, the motor is converted into a generator to generate electricity, and the mechanical energy of the EMU is converted into electrical energy and input into the power grid.

(4) When the bullet train pulls into the station, due to the fast airflow and low air pressure nearby, if people stand too close, the pressure behind them will be great, which will push people to the side of the train, which is prone to danger, so they should stand outside the safety line.

(5) In case of emergency, passengers can use the "escape hammer" to break the glass and escape. Therefore, the "escape hammer" should have a sharp front end, which can reduce the stress area and increase the pressure under the condition of constant pressure, so Figure B meets the requirements.

So the answer is: (1) static; Balance force;

(2) inertia;

(3) machinery;

(4) pressure;

(5)B。