有如下程序： #include＜iostream＞ using namespace std; class Demo
A. 1和1
B. 1和2
C. 2和3
D. 2和4
查看答案
下面的函数模板定义中错误的是
A. template
B. template Q F(Q x){retum Q+x;) Q F(Q x){return x+x;}
C. template＜classT＞
D. template＜class T＞ TF(T x){return x*x;) Bool F(tx){return x＞1;)
The author's attitude towards the future of China's AIDS problem might be described as one
A. worried.
B. indifferent.
C. optimistic.
D. frustrated.
What measure was taken against floods in London in the 1980s？
A flood wall was built.
B. Rescue teams were formed.
C. An Mann system was set up.
D. 50 underground stations were made waterproof.
某工程影响一个生态因子，影响的范围为50k2，物种的多样性减少45%，此项目生态环境影响评价级别为()
A. 1级
B. 2级
C. 3级
D. 低于3级
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