关于颗粒状白斑,下列说法正确的是
A.不伴有白色念珠菌感染
B.不易恶变
C.属于均质型白斑
D.属于非均质型白斑
E.多发生于口底及舌腹
参考答案:C
They are teachers and don’t realize _______ to start and run a company.
A.what takes it
B.what they take
C.what takes them
D.what it takes
低钾血症对心脏的危害有()。
A.使心肌细胞静息电位减小,心脏传导减慢
B.心肌细胞膜对K+通透性降低
C.自律性降低
D.自律性增高
E.心肌有效不应期缩短