单选题
发布日期:2020-04-10
SELECT city_address, COUNT(*) FROM customers WHERE city_address IN ('Los Angeles', 'San Francisco');
SELECT city_address, COUNT(*) FROM customers WHERE city_address IN ('Los Angeles', 'San Francisco') GROUP BY city_address;
SELECT city_address, COUNT(customer_id) FROM customers WHERE city_address IN ('Los Angeles', 'San Francisco') GROUP BY city_address, customer_id;
SELECT city_address, COUNT(customer_id) FROM customers GROUP BY city_address IN ('Los Angeles', 'San Francisco');
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试述发热的病因。
有本地户口,但举家外出谋生一年以上的住户依然列入本地住户范围内。()
某一高血压伴充血性心力衰竭患者,同时患有肾上腺嗜铬细胞瘤和外周血管痉挛性疾病,应选用治疗的药物是()
在不同进制的数中,下列最小的数是( )。
下列各药,入汤剂用法错误的是()
女。19岁。感觉牙齿咀嚼无力2年,检查: 等松动Ⅱ度, 松动Ⅰ度,牙龈轻度肿胀,菌斑少。袋深4~6mm。X线示片: 牙槽骨明显吸收,而牙槽骨吸收为角状。该病最可能的诊断为()
图书辅文不包括()。
钩状效应是指用ELISA一步法测定标本中待测抗原时,抗原浓度过(),实测值偏()的现象,极易造成假阴性()
肝肾不足所致之胎动不安,应首选()
轨道爬行会导致()线路病害。
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