当商品的Ed=0时，税收转嫁的方向是（）
A、全部前转
B、全部后转
C、部分前转，部分后转
D、全部消转
参考答案：A
The manager as well as his whole team _____ determined to do the work as _____ as they
can and promises to get it completed in time. [ ]
A. are; well
B. is; well
C. are; good
D. is; good
氟烷类吸入麻醉药特点不包括（）
A.诱导期短，苏醒快
B.麻醉深度不易调整
C.肌肉松弛作用较好
D.不增加心脏对儿茶酚胺类的敏感性
E.对呼吸道无明显刺激
