基因型为AaBbCC的玉米,用其花药进行离体培养,获得玉米植株的基因型种类有()
A.1种
B.2种
C.4种
D.9种
参考答案:C
在通常情况下,物质燃烧需要具备什么条件?
You want to use the Web to let (76) users or your customers look (77) corporate information. But you want to keep installation at the user end (78) and you don’t want just. (79) to get (80) your databases. That may be where an application server enters the picture. For more user machine independent, these software packages, typically written in the (81) programming language for use on Windows (82) -based systems, act as go-betweens (83) browser-equipped end users to the databases that (84) the information they need to (85) .
A.held
B.helt
C.hold
D.holt