题目内容
危险的存在是保险产生的必要条件。( )
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In June 1985, two British mountaineers Joe Simpson and Simon Yates made the first-ever climb of the 21,000-foot snow-covered Siula Grande mountain in Peru. It was an exceptionally (26) job, but nothing compared to what was to (27) . Early in the process, Simpson (28) and broke his right knee. Yates could have (29) him but managed to find a way of (30) him down the mountains on a rope in a series of difficult drops. Then Simpson fell into a crevasse and Yates eventually had no (31) but to cut the (32) , completely convinced that his friend was now (33) In his book on the (34) , Joe Simpson wrote:(35) I looked at the distant moraines, I know that I must at least try I would probably (36) there among those rocks. If I died, well, that wasn’t so (37) , but I wouldn’t have (38) waited for it to happen. The (39) of dying no longer affected me as it had in the crevasse at first. I now had a chance to (40) it and struggle against it.The survival of Yates himself was (41) . That Simpson somehow found a way of (42) out of the crevasse after 12 hours and then crawled and (43) himself six miles back to camp, (44) three days and might without food or drink, would be considered as a heroic fiction. But in fact it was so (45) . 42().
滴定终点与化学计量点不一致，会产生偶然误差。
某政府机构拟建设一个网络，委托甲公司承建。甲公司的张工程师带队去进行需求调研，在与委托方会谈过程中记录了大量信息，其中主要内容有： 用户计算机数量：80台；业务类型：政务办公，在办公时不允许连接Internet；分布范围：分布在一栋四层楼房内；最远距离：约80米；该网络通过专用光纤与上级机关的政务网相连；网络建设时间：三个月。 张工据此撰写了需求分析报告，与常规网络建设的需求分析报告相比，该报告的最大不同之处应该是 (27) 。为此，张工在需求报告中特别强调应增加预算，以采购性能优越的进口设备。该需求分析报告 (28) 。
在声明派生类时，如果不显式地给出继承方式，缺省的类继承方式是私有继承private。已知有如下类定义：class Base protected：void fun()；class Derived: Base ；则Base类中的成员函数fun()，在Derived 类中的访问权限是 【11】 (注意：要求填写 private、protected或public中的一项)。
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