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问题 多项选择题

竣工图的更改方法有哪些（）。

A、文字、数字更改是杠改

B、线条更改是划改

C、局部图形更改可圈出更改部位，在原图空白地重新绘制

D、随意更改

答案

参考答案：A, B, C

解答题
定义在R上的奇函数f（x）满足f（1-x）=f（x）且x∈[0，l]时，f（x）=
2x
4x+1
．
（Ⅰ）求函数f（x）在[-l，l]上的解析式；
（II）当λ为何值时，关于x的方程f（x）=λ在[-2，2]上有实数解？
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单项选择题

One of the guidelines in writing the C code for a software tool is as follows: write code that is as clear and as simple a (76) . The C language can be difficult to read if you combine all (77) features in a single statement. Break complicated (78) into several easy to understand statements for the (79) of readability. This style helps to make your programs more (80) and error-free.

A．readable

B．reusable

C．possible

D．semantic

E．syntactic

F．constructions

G．safe

H．impossible

I．sake

J．structure
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