答:直接用使用EJB时的相同选项和限制。
Answer: Use the same options and restrictions when using EJBs directly.
功能性的需求用使用用例的术语来描述。
Functional requirements are described in terms of use cases.
BioSolar开始用使用过的棉布,将其制成纤维膜,一种自然纤。
BioSolar starts with used cotton rags and turns them into a film of cellulose, a natural fiber.
If I know I'm going to need something over and over again, I squirrel it away somewhere and then get it back when I need it.
如果我知道我将要反复,使用一个东西时,我会把它贮藏起来以后用。
If it's possible, use animals that don't feel pain, or use lower forms of life.
如果可以的话,请使用那些感觉不到疼痛的动物,或者用低级生物。
If I decide there's a better way to get input, and there is, then I can make it to change what I don't have to change the code that uses the input.
如果我觉得有更好的获取输入的方法,我可以直接改去用这种方式,而不用更改使用了,输入处的代码。
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