乙脑病人早期诊断依据是（） ["脑组织中分离病毒","流行病学资料","血常规","典型临床症状","特异性IgM抗体"]
神经衰弱的特征是（） ["精神易兴奋又易疲劳","高兴不起来","无精打采","头疼","睡眠障碍"]
临床上最容易发现原位癌的部位是（） ["食管","结肠","支气管","乳腺","角膜"]
6-巯基嘌呤对下列哪种肿瘤疗效好（） ["成人急形淋巴细胞白血病","儿童急性淋巴细胞白血病","恶性淋巴瘤","慢性粒细胞白血病","绒毛膜上皮癌"]
乙脑的后遗症期是在发病（） ["2个月后","9个月后","3个月后","1个月后","6个月后"]
钢的工艺性能指哪些？
