故障树分析法
王先生，40岁。突发上腹剧痛3h，转移至右下腹2h后就诊。体检：体温38.4℃，血压120/70mmHg，心率84/min，呼吸20/min。全腹压痛、反跳痛，腹肌紧张呈板样，以剑突下及右下腹为显著，肠鸣音消失，移动性浊音（士）。血白细胞9.0xlo，/L，中性粒细胞78％。。考虑王先生最可能的病因是（） ["急性阑尾炎穿孔","急性胆囊炎穿孔","胃、十二指肠溃疡急性穿孔","出血坏死性胰腺炎","绞窄性肠梗阻"]
What does the Character Set Scanner command line utility do？（） ["Reports only on any Unicode character conversions required.","Performs character set conversions to the new specified character set.","Scans on any character set conversion required， then converts the data.","Checks for any character definitions that will fail conversion to the new character set."]
致命故障
在采用气门摇臂的配气机构中，进气门的气门间隙一般为（）。 ["0.25~0.3mm","1mm","0.3~0.35mm","0.4~0.5mm"]
股票
