男性,58岁,患慢性支气管炎,偶有轻微咳嗽,少量痰液,下列哪项措施最为合适()
A. 长期小剂量应用抗生素治疗
B. 应用支气管扩张剂以利排痰
C. 应用少量激素,减少气道非特异性炎症
D. 提高机体抗病能力,避免上呼吸道感染
E. 少量镇咳剂
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患者,女性,37岁,排便后肛门处剧烈疼痛,并有一肿块,触痛明显,最可能是()。
A. 内痔脱出
B. 直肠息肉脱出
C. 血栓性外痔
D. 肛裂并肥大乳头
E. 复杂性肛瘘
If a davit-launched liferaft aboard a ship cannot be launched because of damage to the davit,you should().
A. inflate the liferaft on deck
B. roll the liferaft over the side
C. go to another liferaft station
D. get a saw and cut the liferaft free
进出口货物配额是指国家对某种货物的进口或出口规定一定的数量限额,超过限额后,该货物不得再出口或者进口。关税配额属进出口货物配额的一种。()
A. 正确
B. 错误
The CUSTOMERS table has these columns: CUSTOMER_ID NUMBER(4) NOT NULL CUSTOMER_NAME VARCHAR2(100) NOT NULL STREET_ADDRESS VARCHAR2(150) CITY_ADDRESS VARCHAR2(50) STATE_ADDRESS VARCHAR2(50) PROVINCE_ADDRESS VARCHAR2(50) COUNTRY_ADDRESS VARCHAR2(50) POSTAL_CODE VARCHAR2(12) CUSTOMER_PHONE VARCHAR2(20) Which statement finds the rows in the CUSTOMERS table that do not have a postal code? ()
A. SELECT customer_id, customer_name FROM customers WHERE postal_code CONTAINS NULL;
B. SELECT customer_id, customer_name FROM customers WHER postal_code = ' ___________';
C. SELECT customer_id, customer_name FROM customers WHERE postal _ code IS NULL;
D. SELECT customer_id, customer_name FROM customers WHERE postal code IS NVL;
E. SELECT customer_id, customer_name FROM customers WHERE postal_code = NULL