5．用36.5％的浓盐酸(密度1.2 g·cm－3)配1 mol·L

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问题选择题

5．用36.5％的浓盐酸(密度1.2 g·cm^－³)配1 mol·L^－¹的稀盐酸 100 mL，配制过程需用到哪些仪器，且先后顺序正确的是

⑤100 mL容量瓶 ⑥胶头滴管 ⑦玻璃棒

A．①③⑤⑥⑦

B．②③⑦⑤⑥

C．③⑤⑦⑥①

D．④③⑦⑤⑥

答案

答案：B

选择题

Lawrence Craven, a doctor from the USA, is the author of several published reports, one of ________

introduced the idea in 1953 ________ aspirin could reduce the risk of heart attacks.[ ]

A. them; when

B. which; that

C. what; that

D. which; when

问答题简答题

长沙市每年设立了多少文化产业发展引导资金？