()不是引起色谱仪噪声的因素。
A、桥电流过大
B、高沸点组分在热敏元件上冷凝
C、载气未净化好
D、衰减大
参考答案:D
—Would you rather come on Friday or Saturday?
— _________.
A.Yes, of course
B.The other is better
C.What’s the matter
D.Either would suit me
欲比较某地1~2月男婴与7~8岁男童的身高变异程度,宜采用的指标是()。
A.
B.s
C.
D.CV
E.Sp