螺纹标注错误的是()
A、M16×1.5-7H
B、M20-7H
C、M14-7H-L
D、M16左
参考答案:D
The hotel is almost finished, but it ________needs one or two weeks to get ready for guests.[ ]
A. only
B. also
C. even
D. still
肺隔离症的辅助检查手段主要包括()
A.胸部X线片
B.胸部CT(增强)
C.胸部MRI
D.支气管镜检查
E.肺功能检查