______ are the sweaters?
[ ]
A. How many
B. How much
C. How far
D. What piece
答案:B
除哪项外,以下疾病均可出现粘膜损害:
A.银屑病
B.寻常型天疱疮
C.扁平苔藓
D.玫瑰糠疹
E.白癜风
氧化亚氮的不良反应有()
A.抑制呼吸
B.抑制白细胞和血小板
C.增大体内气体容积
D.恶心呕吐
E.弥散性缺氧