搜题请搜索小程序“爱下问搜题”
问题 判断题

旅游资源是指能对旅游者产生吸引力，可以为旅游业开发利用，并可产生经济利益的各种事物和因素。

答案

参考答案：错

单项选择题

A. Evidence shows that wild animals can transmit virus to man.
B. Scientists report the extinction of some endangered wild animals
C. Men and women cannot protect themselves from the attack of virus.
D. Hunting or eating animals will not bring the risk of being infected by virus.
查看答案
单项选择题

图示刚架的弯矩图中正确的是（）。

A.

B.

C.

D.
查看答案