题目内容

二阶线性非齐次微分方程的所有解( )

A. 构成一个2维线性空间
B. 构成一个3维线性空间
C. 不能构成一个线性空间
D. 构成一个无限维线性空间

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微分方程的通解就是含有任意常数,并且任意常数个数与微分方程的阶数相同的解.

A. 对
B. 错

There are ten sentences in this section. Beneath each sentence there are four words or phrases marked A, B, C and D. Choose one word or phrase that best completes the sentences.1.Property is defined _______ the rights a person has to the use and disposition of an object.

A. regarding as
B. concerning
C. relating
D. looking

下列语句的执行结果是: a = 0 while a < 5: a = a + 1 if a %2 == 0: continue print(a)

A. 1 3 5
B. 1 2 3 4 5
C. 2 4
D. 1

下列语句的执行结果是: a = 0 while a < 5: a = a + 1 if a %2 == 0: break print(a)

A. 1 3 5
B. 1 2 3 4 5
C. 2 4
D. 1

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