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【单选题】
当连续梯尺在 PS 版上的晒透级数比基准级数多时,表明曝光( )。
A.
不足
B.
正常
C.
过度
D.
逆转
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【简答题】The following figure shows two circuits formed by NMOS. The circuit can realize logic function [mathjaxinline]y = overline {AB + C + D}[/mathjaxinline] is shown in Figure____
【单选题】The figure shows the deformation of the two loaded cubic elements. The shear strains ( γ ) of the two is , respectively.
A.
B.
C.
D.
【简答题】图示矩形截面简支梁,已知:h/b=2,材料的许用应力[ζ]=10MPa,试设计:b=()m、h=()m。
【单选题】Shall ______ give you a cup of coffee?
A.
I
B.
you
C.
they
D.
it
【单选题】The figure shows two blocks with two forces acting on the pair. Is the net force on the larger block
A.
greater than 2 N
B.
equal to 2 N
C.
less than 2 N
【单选题】在图示矩形截面简支梁的上、下面上作用有切向均布载荷 q 。其任意截面上的 。
A.
剪力为零,弯矩不为零
B.
剪力不为零,弯矩为零
C.
剪力和弯矩均为零
D.
剪力和弯矩均不为零
【单选题】The figure shows a bar moving to the right on two conducting rails. To make an induced current i in the direction indicated, a constant magnetic field in region A should be in what direction?
A.
Into the page
B.
Out of the page
C.
Left
D.
Right
【简答题】(Figure: Bicycles and Radishes I) The figure shows production possibility frontier for two countries that produce only radishes and bicycles. The axes of both graphs are measured in equivalent units. ...
【单选题】The figure shows the employment rates of 20- to 24-year-olds in the U.S., by sex and educational attainment in 2016. Answer the question according to the information in the figure. Which of the follow...
A.
The employment rate is higher for young adults with higher levels of educational attainment than for those with lower levels of educational attainment.
B.
The difference between the employment rates for females and males becomes larger with the increase in educational attainment.
C.
For females, the employment rate without completing high school is more than two times lower compared with the rate for those with a bachelor's or higher degree.
D.
among young adults, employment rates are higher for males than for females at each level of educational attainment.
【简答题】6-1 图 示矩形截面简支梁,承受均布载荷 q 作用。若已知 q = 2 kN/m , l = 3 m , h = 2b = 240 mm 。试求截面横放 ( b) 和竖放 ( c) 时梁内的最大正应力,并加以比较。
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