天疱疮最主要的死亡原因是()。
A.应用免疫抑制剂引起的感染等并发症和多脏器衰竭
B.低蛋白血症
C.继发感染
D.电解质紊乱
E.恶病质
参考答案:C
It is difficult _______ the book in one day. It is so thick. [ ]
A. to finish to read
B. to finish reading
C. finishing reading
D. finishing to read
盐酸氯丙嗪在空气中易被氧化为红棕色,其溶液中加入哪些试剂可阻止其变色()
A.对氢醌
B.连二亚硫酸钠
C.亚硫酸氢钠
D.硝酸钠
E.氯化钠