病态窦房结综合征病因除了以下哪项()
A.电解质紊乱
B.甲状腺功能减退
C.交感神经张力增高
D.心肌病
E.淀粉样变性
参考答案:C
Cooking calls for ________ patience and time but it is ________ enjoyable experience[ ]
A. a; the
B. /; an
C. the; an
D. a; /
A.6节干电池并联
B.6节干电池串联
C.3节干电池并联
D.3节干电池串联