未知题型 中心供氧装置用氧过程中要注意防火、防热、防油、防堵塞（）

未知题型 植入式静脉输液港置管时以注射座为中心，由内向外，顺时针，逆时针、顺时针交替螺旋状消毒皮肤（75%乙醇、络合点碘各3遍）（）

单项选择题 Calculate insurance premium 计算保险费 Suppose we have the following insurance clauses specified in a sales contract. “Insurance to be effected by the Seller for 110% of invoice value against All Risks and War Risks and Strike Risks, as per Ocean Marine Cargo Clauses of PICC, dated 1/1/1981.” The premium rate of All Risks is calculated at 0.3% and the premium rate of War Risks and Strike Risks are calculated at 0.15% and 0.1%. The sales contract is on CIF basis and the invoice value is US$20,000. Please calculate the insured amount and the insurance premium for the cargo. 5"