再生障碍性贫血的表现包括()
A.造血细胞减少
B.贫血、出血、感染
C.胸骨压痛
D.肝脾大
E.巩膜黄染
参考答案:A, B
He started early so that he_____there in time.
A.could get
B.got
C.had got
D.would have got
G3520C燃气发动机点火过迟的危害()。
A.功率下降
B.热损失增大
C.排气温度升高
D.油耗增大