红外线气体分析仪采用哪种波长检测二氧化碳浓度()
A.3.3μm
B.4.3μm
C.2.3μm
D.5.3μm
E.1.3μm
参考答案:B
_____ you the truth, no one will trust you if you will not get rid of the bad habit-lying. [ ]
A. To tell
B. Tell
C. Telling
D. Told
死骨形成的主要原因是什么?X线有何特点?小儿见于哪些病?