在我国时事新闻享有著作权。

2014年央视3.15晚会发布信息：市场上一些橡皮、涂改液经检测机构检验后发现甲苯（C₇H₈）超标34倍。甲苯不但会刺激眼睛、呼吸道，如果在密闭空间里大量吸入，还会造成急性中毒，甚至会致癌。下列有关甲苯的说法错误的是

A．从性质上看：甲苯是一种有毒的物质

B．从变化上看：甲苯完全燃烧只生成水

C．从宏观上看：甲苯由碳、氢二种元素组成

D．从微观上看：1个甲苯分子由7个碳原子和8个氢原子构成

随机器设备同时进口的记录操作系统、设备说明、专用软件等内容的音像制品，进口时不需国家主管部门审批。

某框架结构采用柱下独立基础，基础尺寸3m×5m，基础埋深为2.0m，地下水位埋深为1．0m，持力层为粉质黏土（天然孔隙比为0.8，液性指数为0.75，天然重度为18kN/m3）在该土层上进行三个静载荷实验，实测承载力特征值分别为130kPa、110kPa和135kPa，按《建筑地基基础设计规范》（GB50007-2011）作深宽修正后的地基承载力特征值最接近于（）项。（）

A.137kPa

B.147kPa

C.157kPa

D.167kPa

影响消费者购买力和消费支出的决定因素是（）。

A.消费者收入

B.可支配个人收入

C.可随意支配个人收入

D.消费者储蓄和信贷

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．plenty

B．many

C．multiple

D．more