Every vessel should at all times proceed at a safe speed. Safe speed is defined as that speed where ____.

词汇与结构The PMC uses MEC power lever angle, N1 speed, and inlet temperature and pressure to ________, or trim, the MEC to obtain the desired N1 speed.

The phenomenon of flutter occurs: A: Rather at low speed and low altitude. B: Rather at high altitude and high angle of attack. C: Rather at high speed. D: Rather transonic, beyond the critical Mach.

hurry,_______speed.

______ hurry,_______speed.

Dictation: In this section, a short passage will be read for three times. In the first time, it will be read in normal speed. In the second time, there will be a long pasuse after each sentence. And in the third reading, it will be read in normal speed again. Please write the full passage down while you are reading.

________is developing with great speed.

The economy of our country is developing with a __________ speed.

The program was implemented with great (efficient)（）and speed.

Gemini ( 双子座 ) is an airy, intellectual ...with dizzying speed.