问题
单项选择题
肾上腺素加入局麻药溶液中的浓度应该是（）
A.100ng/ml
B.80ng/ml
C.5ng/ml
D.80ng/ml
E.8ng/ml
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
肾上腺素加入局麻药溶液中的浓度应该是（）
A.100ng/ml
B.80ng/ml
C.5ng/ml
D.80ng/ml
E.8ng/ml
参考答案：C
Questions 23-30
· You will hear people from the National Food Council complaining to retailers about the high prices they are charging for food products and household goods. They complain that the shops have marked up wholesale prices far too much.
· For each question (23-30), mark one letter (A, B or C) for the correct answer.
· After you have listened once, replay the recording.
Many big shops make a profit of
A．
| A. two percent or under. |
B．
| B. over five percent. |
C．
| C. about ten percent. |