搜题请搜索小程序“爱下问搜题”
问题 选择题

下列说法不正确的是 [ ]

A.碘酒不是酒，碘酒是碘的酒精溶液

B.干冰不是冰，是二氧化碳固体

C.相对原子质量不是原子的相对质量，而是原子的实际质量，它的单位为克

D.“白色污染”不是白色的污染，而是指难降解的塑料垃圾所造成的污染

答案

答案：C

单项选择题

对于开发未确定使用权的国有荒山、荒地、荒滩从事种植业、林业、畜牧业、渔业生产的，经( )依法批准，可以确定给开发单位或者个人长期使用。

A．国务院
B．省、自治区、直辖市级以上人民政府
C．县级以上人民政府
D．乡(镇)级人民政府
查看答案
单项选择题

Most IP layer-based proxy mechanisms, such as network address translation (NAT), only support uni-directional proxy, from the internal network to external network (the Internet). The proxy establishes the communication channel by (66) IP addresses. The IP addresses must be (67) . These proxy mechanisms prevent applications that must establish return data channels from establishing their data channels, such as, multimedia applications. IP layer-based proxy mechanisms need additional software (68) for each application that uses (69) channels. SOCKS identifies communication targets through domain names, overcoming the restriction of using private IP addresses. SOCKS can use domain names to establish communication between separate LANs, with (70) IP addresses.

A．routable

B．locatable

C．path-selected

D．road-defined
查看答案