第2题: [单项选择]贮存HBV、HCV阳性血液后处理不正确的是（） A. 贮存冰箱内壁用含氯消毒剂擦拭消毒 B. 贮存冰箱内壁用紫外线照射消毒 C. 贮存冰箱内壁用过氧乙酸擦拭消毒 D. 阳性血液和血制品尽快彻底焚烧 E. 贮存的冰箱解冻后的冰水，含氯消毒剂浸泡消毒30分钟后排放 参考答案:B 答案解析:HBV抵抗力很强，对热、低温、干燥、紫外线及一般浓度消毒剂均能耐受。
第3题: [单项选择]When two different metals are joined to form a closed circuit and exposed to different temperatures at their junctions （） which can be used to measure temperature. A. a current will flow B. a power will develop C. a heat will flow D. a pressure will produce 参考答案:A
第4题: [单项选择]Doors are generally formed in the （） of the both in-line and Vee engines to give maintenance access to the crankshaft main and connecting rod large end bearing. A. bedplates B. columns C. cylinder blocks D. safety caps 参考答案:B
