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（A题）小明家准备建造长为28米的蔬菜大棚，示意图如图1．它的横截面为如图2所示的四边形ABCD，已知AB=3米，BC=6米，∠BCD=45°，AB⊥BC，D到BC的距离DE为1米．矩形棚顶ADD′A′及矩形DCC′D′由钢架及塑料薄膜制作，造价为每平方米120元，其它部分（保温墙体等）造价共9250元，则这个大棚的总造价为多少元？（精确到1元） （下列数据可供参考 2 =1.41， 3 =1.73， 5 =2.24， 29 =5.39， 34 =5.83） （B题）如图，河边有一条笔直的公路l，公路两侧是平坦的草地．在数学活动课上，老师要求测量河对岸B点到公路的距离，请你设计一个测量方案．要求： （1）列出你测量所使用的测量工具； （2）画出测量的示意图，写出测量的步骤； （3）用字母表示测得的数据，求出B点到公路的距离．
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举一反三
【单选题】By mentioning the problems of Chinese vocational education, the author tends to ______.
A.
emphasize that China's vocational training is too abstract
B.
inform. that the image of vocational work is negative
C.
warn that the rural immigrant workers lack vocational training
D.
suggest that the government investment on it is not enough
【多选题】Vocational education in China is delivered through:
A.
vocational higher education institutes
B.
secondary skill schools
C.
adult education
D.
vocational high schools
【简答题】[ A] technical [ B ] vocational [ C] honorable [ D] professional
【简答题】A．national B．operational C．international D．vocational
【简答题】[A] This 1000-wat electric kettle rapidly boils up to 1 quart of water for coffee, tea and more. It provides a rapid and quiet heating process, it ideal for the office, home or students’ ...
【简答题】为减轻负载波动的影响,往往在主轴传动系统中加入飞轮使转动惯量加大,为此采用 控制主轴停车制动和主轴上刀制动。
【简答题】provides students with vocational training?__________
【简答题】第六章课文概括
【单选题】Vocational Education Vocational education refers to education for a particular occupation. Industrialized countries have seen a fall in demand for unskilled workers, and an increase in jobs in the pro...
A.
Right
B.
Wrong
C.
Not mentioned
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