紧急逃生呼吸装置至少应能提供_____min的持续使用时间。
A.5
B.10
C.20
D.30
参考答案:B
Every year in the U. S. , colleges and graduate schools continue to highly () trained people to compete for jobs that are not there. As a result, graduates cannot enter the professions for which they were trained.
A. turn out
B. work out
C. make out
D. bring out
美国和印度不是军事同盟关系,没有进行过军事合作。