下面哪些说法是错误的？（） ①有包装的食品比裸露的食品更安全 ②粉丝越白越好 ③香肠颜色越红越好 ④藕带越白越好 ["①②③","①②④","①③④","②③④"]
患者男，51岁。胸骨后剧烈疼痛4小时，伴大汗淋漓，血压80/40mmHg，心率134次/分，面色苍白，四肢发冷，心电图提示广泛心肌梗死。有指导性意义的辅助检查是（） ["心电图和血压检测","心肌酶谱检测","漂浮导管血流动力学检测","超声心动图","胸部X线"]
中药茯苓的加工品有（） ["茯苓个","茯苓皮","茯苓块","茯神","茯苓片"]
大横穴定位（） ["中极旁3寸","中极旁4寸","关元旁3寸","中极旁开2寸","脐旁4寸"]
中药冬虫夏草的主产地是（） ["四川","青海","西藏","甘肃","湖北"]
如何办理人防工程的权属登记手续？
