| The biggest safety threat facing
airlines today may not be a terrorist with a gun, but the man with the portable
computer in business class. In the last 15 years, pilots have reported well over
100 incidents that could have been caused by electromagnetic interference. The
source of this interference remains unconfirmed, but increasingly, experts are
pointing the blame at portable electronic devices such as portable computers,
radio and cassette players and mobile telephones. RTCA, an organization which advises the aviation (航空) industry, has recommended that all airlines ban (禁止) such devices from being used during "critical" stages of flight, particularly take-off and landing. Some experts have gone further, calling for a total ban during all flights. Currently, rules on using these devices are left up to individual airlines. And alt A. they don’t believe there is such a danger as radio interference B. the harmful effect of electromagnetic interference is yet to be proved C. most passengers refuse to take a plane which bans the use of radio and cassette players D. they have other effective safety measures to fall back on [判断题]设备上的急停开关一般是并联在电路中。
A.正确 B.错误 [单项选择]女患者，22岁，平时贪凉饮冷，经期小腹冷痛，得热痛减，按之痛甚，经量少，色紫黑，有血块，苔白腻，脉沉紧。中医辨证为：（）
A. 寒凝血瘀 B. 气滞血瘀 C. 气血虚弱 D. 肝肾虚损 E. 湿热下注 [单项选择]在无菌操作中发现手套破裂应( )
A. 用无菌纱布将破裂处包好 B. 用胶布将破裂处贴好 C. 立即更换 D. 再加套一副手套 E. 用乙醇棉球擦拭手套 [单选题]安装电力通信设备前，宜对机房作业现场基本条件、电力通信电源负载能力等是否符合安全要求进行( )。
A.核实 B.现场检查 C.现场勘察 D.记录 [多选题]在滑坡地段挖土前应了解（）。
A.地质勘察资料 B.地形 C.地貌 D.蜘度 E.交通 [判断题]农和机构的会计核算方法前后各期应当保持一致，不得随意变更。
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