皮皮学，免费搜题
登录
搜题
【判断题】
1971年英国风景园林设计师麦克哈格教授创作了《寂静的春天》一书。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】When you use the ping command to send ICMP messages across a network, what's the most common request/reply pair you'll see? (Select one answer choice)
A.
Echo request and Echo reply
B.
ICMP hold and ICMP send
C.
ICMP request and ICMP reply
D.
Echo off and Echo on
E.
None of the above
【单选题】If you want to lose weight, you should not take such food ______ really necessary.
A.
as is
B.
as it is
C.
as it was
D.
as was
相关题目：