气管切开时，易引起无名动脉损伤的位置低于（）
A.1气管软骨环
B.2气管软骨环
C.3气管软骨环
D.4气管软骨环
E.5气管软骨环
参考答案：E
28.Which sentence is wrong?
29.
A．I felt it impossible for him to take the exam.
30.
B．I found it impossible that he might take the exam.
31.
C．I thought that he might not take the exam.
32.
D．In my opinion he might take the exam.
说明FRANCO—TOSI燃煤锅炉强制循环泵的型式及出力等各部参数。
