Tom _____ his English book in his backpack. [ ]
A. looks
B. looks like
C. puts
D. meets
答案:C
患者呕吐吞酸,嗳气频繁,胸胁闷痛,脉弦。治疗应选用:( )
A.干姜
B.高良姜
C.吴茱萸
D.丁香
E.小茴香
简述列车提速后对转向架配件的主要影响。