Water is the ______ of [img=35x22]18034cad4dbb2bc.png[/img].
A: trivial name
B: formula
C: structure
D: molecular weight
A: trivial name
B: formula
C: structure
D: molecular weight
举一反三
- X射线的波长大约是多少（）m？ A: [img=35x22]1802e152a714827.png[/img] B: [img=35x22]1802e152afa6fc1.png[/img] C: [img=41x22]1802e152b83ed97.png[/img] D: [img=41x22]1802e152c1f483f.png[/img]
- ppm对应于（ ） A: [img=35x22]1803da53f48a79d.png[/img] B: [img=35x22]1803da53fd68c6c.png[/img] C: [img=35x22]1803da5405eb916.png[/img] D: [img=35x22]1803da540f0b94f.png[/img]
- 该梁左侧第一排支座负筋为[img=810x377]180369db6f4ef9d.png[/img] A: 2[img=108x156]180369db79d338f.png[/img]22 B: 2[img=108x156]180369db79d338f.png[/img]25 C: 4[img=108x156]180369db79d338f.png[/img]22 D: 4[img=108x156]180369db79d338f.png[/img]25
- 设随机变量X的概率密度函数为[img=218x61]1803e0a23ad689b.png[/img]则P(X>2)的值为 A: 0.5 B: [img=25x22]1803e0a24312c9d.png[/img] C: [img=56x24]1803e0a24c84726.png[/img] D: [img=35x22]1803e0a25562f36.png[/img]
- 设随机变量X的概率密度函数为[img=218x61]1802d3ea0b654f2.png[/img]则P(X>2)的值为 A: 0.5 B: [img=25x22]1802d3ea13ad25e.png[/img] C: [img=56x24]1802d3ea1ba0974.png[/img] D: [img=35x22]1802d3ea24a53e7.png[/img]