()是职业教育区别于普通教育的主要特征。
A.实践性
B.理论性
C.普遍性
D.适用性
参考答案:A
—We’ve spent too much money recently.
—Well, it isn’t surprising, Our friends and relatives_______ around all the time.
A.are coming
B.had come
C.were coming
D.have been coming
直升机燃油系统必须配备的指示是()()