长期设动成本定价法是()的定价方法。
A. 以长期变动成本为高限
B. 以长期固定成本与变动成本之和为低限
C. 以固定成本为低限
D. 以长期变动成本为低限,以长期变动成本加上某一比例为高限
某婴儿,日龄16日。近2日口腔黏膜上有白色如凝块样物,强拭去可见红色疮面,吃奶好,睡眠佳。可能的诊断是()。
A. 鹅口疮
B. 疱疹性口腔炎
C. 溃疡性口腔炎
D. 单纯性口腔炎
E. 麻疹黏膜斑
You have an Exchange organization that contains Exchange 2000 Server Service Pack 3 (SP3), Exchange Server 2003 Service Pack 2 (SP2), and Exchange Server 2007 Service Pack 1 (SP1) servers. You need to transition the organization to Exchange Server 2010. What should you do first?()
A. Remove all Exchange Server 2007 SP1 servers from the organization.
B. Remove all Exchange 2000 Server and all Exchange Server 2003 servers from the organization.
C. Remove all Exchange 2000 Server servers from the organization,and then upgrade all Exchange server 2007 servers to SP2.
D. Remove all Exchange Server 2003 servers from the organization,and then upgrade all Exchange server 2007 servers to SP2.
氯霉素常见的严重不良反应是()
A. 肾损害
B. 胃肠道反应
C. 骨髓抑制
D. 过敏反应
E. 中枢抑制