某百货公司拟开始进入电子商务行业，该公司目前的资产负债率为40%，加权平均资本成本为

下列各组词语中，没有错别字的一项是（  ）

A．黄粱美梦金钢钻以逸待劳相辅相成

B．完璧归赵必需品不明就理变幻无穷

C．火中取栗照相机额手称庆原形毕露

D．黔驴技穷钓鱼竿分庭抗礼不悲不亢

乙苯脱氢生成苯乙烯，为一个（）反应。

A.强吸热增分子

B.强吸热减分子

C.强放热增分子

D.强放热减分子

有一炼油厂，主要以进口高硫原油为原料，硫含量约1.93%，配置一定吨位的锅炉。选择延迟焦化加高硫焦造气方案作为原油加工方案。项目配套建设循环水厂、除盐水处理站及凝结水站一座。拟建项目各装置均采用本厂饱和气和部分氧化造气装置产生的合成气为燃料，并以燃气为补充燃料。该项目所在地区地势平坦，项目东部8km外与某市隔海相望，南部10km处有一省级旅游度假区，西南11km处是国家级森林公园，东南方向14km外是一海湾，该海湾内有国家一类、二类保护动物。
根据以上内容，回答以下问题。

* * 肿瘤常见的有（）、（）和（）

The kernel is the (66) of an operating system such as Windows98, Windows NT, Mac OS or Unix. The kernel provides basic services for the other parts of the operating system, (67) it possible for it to run several programs at once (multitasking), read and write files and connect to networks and peripherals. Applications and utility programs use the services provided by the kernel to provide practical business functionality.

In operating systems such as Windows or most versions of Unix, the kernel (68) everything except application and utility programs.

In microkernel operating systems such as Digital Unix and Apples forthcoming Mac OS Server, the kernel (69) supports only multitasking and memory management. Other services such as applications, utilities and the user interface support device drivers, API and graphics which all (70) outside the microkernel.

（69）处填（）。

A．it

B．itself

C．that

D．which