We make dumplings ___________ the Chinese New Year. [ ]
A. for
B. of
C. in
答案:A
与苯乙肼同用会出现高血压危象和脑出血的是()
A.各种白酒
B.乳酸食品
C.葡萄柚汁
D.盐腌海鱼
E.茶叶
阀门常见的故障有那些?