草坪无虫害、无杂草、无枯黄,草坪的覆盖度应达到90%,集中空秃不得超过5m2。
参考答案:错
解析:草坪无虫害、无杂草、无枯黄,草坪的覆盖度应达到95%,集中空秃不得超过1m2。
商业、旅游、娱乐用地的使用权最高年限为()年
A.70
B.50
C.40
D.30
Packet-switching wireless networks are preferable (1) when transmissions are (2) bemuse of the way charges are (3) per packet. Circuit-switched networks are preferable for transferring large files or for other lengthy transmissions because customers are (4) for the (5) of time they use the network.
2()
A.long
B.short
C.large
D.small