判定理发店、美容店中理发用具消毒效果的微生物指标为()。 ["大肠菌群","乙型肝炎表面抗原","痢疾杆菌","金黄色葡萄球菌","细菌总数"]
一般情况下,合同的主要条款不包括()。 ["标的","价款或者报酬","当事人的单位","当事人的住所"]
在人体中,骨骼的声速最快() ["是1500m/s","是3360m/s","约为1500m/s","约为3360m/s","约为4360m/s"]
假定不存在技术进步,从长期来看,()不正确。 ["资本存量保持不变","人均消费水平保持不变","储蓄率保持不变","人均产出保持不变"]
人耳听觉的频率范围是() ["5Hz~16Hz","16Hz~10kHz","16Hz~20kHz","1kHz~10kHz","1kHz~20kHz"]
简述百科全书的主要特点和编排方式。