在石墨复合材料结构中不能使用的紧固件类型是

MTC的功用是

LEAP1-A发动机起动过程中预冷转的作用是

LEAP1-A发动机起动过程中点火、供油、点火关断、起动活门关闭的转速分别是

— When will you leave for Paris for a visit?— _______ next month.

The _______ carefully you write, the fewer mistakes you will make.

Why didn＇t you tell me there was no meeting today? I _____ all the way here _____the heavy snow.

It was _____ great shock to the world that two airplanes crashed into _____ World Trade Centre in New York on Sept．11．

For quite _____ students their teachers’ advice is more important than _____ of their parents＇．

Our order of high-speed computers is scheduled to arrive __________ today or tomorrow.

_________ Jane and Mary like different things, they are great friends.