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【多选题】
对于热力学能是体系状态单值函数概念,正确理解是( )A.
体系处于一定的状态,具有一定的热力学能
B.
对应一状态,热力学能只能有一数值不能有两个以上的数值
C.
状态发生变化,热力学能也一定跟着发生变化
D.
对应于一个热力学能值,可以有多个状态
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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'
【简答题】标记中的()属性设置单元格横跨的列数(用于合并水平方向的单元格),常用属性值为。
【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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