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【多选题】
应按被测电气设备的电压等级选用，额定电压在500V以上的设备，可选用（）。A.
500
B.
1000
C.
2500
D.
5000
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举一反三
【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】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'
【单选题】A Frenchman, the psychologist Alfred Binet, published the first standardized test of human intelligence in 1905. But it was an American, Lewis Terman, a psychology professor at Stanford, who thought t...
A.
0.8
B.
0.9
C.
1.0
D.
1.2
【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'
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