关于晶体液的特点,错误的是()
A.围术期应用最广
B.来源方便
C.有些晶体液的成分接近细胞外液
D.用于液体复苏高效、快速、安全
E.在血管内的半衰期长
参考答案:E
He ______ his homework ______ Sundays.[ ]
A. doesn't, on
B. don't do, in
C. doesn't do, on
D. don't, does
报警系统的试验应符合哪些要求?