Let's hurry to _____ that bus or we'll be late for school.
A.take
B.catch
C.ride
D.get
答案:B
输血的禁忌证有()
A.恶性高血压
B.急性肺水肿
C.先天性心脏病
D.真性红细胞增多症
E.充血性心力衰竭
除了曳引驱动方式,还有哪些其他传统的驱动方式?