下列程序的功能是通过字符串变量操作竖向显示“等级考试”,横向显示“考试等级”,请填空。
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绝热材料的导热系数λ为()。
A 小于0.4W/(m*K)
B 小于0.3W/(m*K)
C 小于0.2W/(m*K)
D 小于0.1W/(m*K)
Directions:For Questions 6-10,you will hear以passage about cigarette smoking. While you listen ,complete the sentences and answer the question. Use not more than 3 words for each answer. You will hear the recording twice. You now have 25 seconds to read the sentences and the questions be-low.