超星 - Lesson 5：词汇与结构 - 查题吧

单选题

The hydraulic system may be affected by ________ problems or outside damage such as bird-strike.

A. technical
B. safety
C. medical
D. organic

单选题

There are some reasons that may ______ wheel well fire such as overheated brakes.

A. contribute to
B. attribute to
C. devote to
D. adhere to

2