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【单选题】
下列关于有机物的叙述中,正确的是 C. 都可以燃烧 D. 含有碳元素的化合物A.
只含有碳元素和氢元素
B.
一定含有氧元素
C.
都可以燃烧
D.
含有碳元素的化合物
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【简答题】如图6-44所示,杆1为直径的圆截面钢杆,许用应力 [ σ ] 1 =140 MPa ;杆 2为边长 a=100 mm 的正方形截面木杆,许用应力 [ σ ] 1 =4.5 MPa 。已知结点 B 处挂一重物 Q =36kN, 试校核两杆的强度。
【单选题】5 如果在一行中输入1 2 3,当运行此程序时,会发生什么? print("Enter three numbers: ") number1 = eval(input()) number2 = eval(input()) number3 = eval(input()) # Compute average average = (number1 + number2 + number3) / 3 # Di...
A.
程序正确运行并显示1.0
B.
程序正确运行并显示2.0
C.
程序正确运行并显示3.0
D.
程序正确运行并显示4.0
E.
程序将在输入上出现运行时错误。
【单选题】Industry should get rid of half its bosses, says behavioral psychologist Alfred J. Marrow.' Adults are quite capable of handling their lives outside their homes, at their jobs,' Marrow said in an inte...
A.
to inform. us that people are dissatisfied with their wages and hours.
B.
to explain that 'job enrichment' creates job.
C.
to suggest that bosses hinder production more than they help it.
D.
to persuade us to carry out our greater' job simplification'.
【单选题】Industry should get rid of half its bosses, says behavioral psychologist Alfred J. Marrow.' Adults are quite capable of handling their lives outside their homes, at their jobs,' Marrow said in an inte...
A.
to inform. us that people are dissatisfied with their wages and hours
B.
to explain that' job enrichment' creates job
C.
to suggest that bosses hinder production more than they help it
D.
to persuade us to carry out our greater' job simplification'
【单选题】Industry should get rid of half its bosses, says behavioral psychologist Alfred J. Marrow. 'Adults are quite capable of handling their lives outside their homes, at their jobs,' Marrow said in an inte...
A.
to inform. us that people are dissatisfied with their wages and hours
B.
to explain that 'job enrichment' creates jobs
C.
to suggest that too many bosses hinder production more than help it
D.
to persuade us to carry out our greater 'job simplification'
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