在地面减速时，所有扰流板都打开。

A.During ground speed braking, all the spoiler panels are activated.

B.During ground deceleration, all the spoiler panels are closed.

C.During ground speed stabilizes, most of the pedals are activated.

正确答案：A

冲洗管道以清除污染。

不要安装厚度大于0.1毫米的填隙片。

在每根管子的开口端放一个堵头。

以60度增量逆时针转动调节器。

此工具是可选的。

按这个顺序执行称重程序。

The diagram shall be arranged so that the flow of the system can be traced with a minimum of effort.

Make sure that you do not connect words which are not related, because this will change the meaning of the noun cluster.

If your reader must know about a specific condition before the start of a procedure or work step, give this condition first.

Technical texts often contain long groups of words that have the function of one part of speech in a sentence.