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【单选题】
按第一类T形截面梁设计时,判别式为()。A.
M> α 1 f c b f ' h f ' (h 0 -0.5h f ')
B.
M ≤ α 1 f c b f ' h f ' (h 0 -0.5h f ' )
C.
f y A s > α 1 f c bx
D.
f y A s < α 1 f c bx
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举一反三
【单选题】斜导柱抽芯机构装配要求闭模后,斜导柱外侧与滑块斜导柱孔留有( )的间隙。
A.
0.05～0.1mm
B.
0.1～0.2mm
C.
0.2～0.5mm
D.
0.5～1.0mm
【单选题】When and where to build the new factory _____. [ ]
A.
is not decided
B.
are not decided
C.
has not decided
D.
have not decided
【简答题】阅读并运行下列程序,理解访问二维数组元素的多种方法。 #include void main( ) { int a[3][4]; int i,j; printf("input:\n"); for(i=0;i<3;i++) for(j=0;j<4;j++) scanf(" % d",&a[i][j]); /* 数组元素下标表示法 */ printf("out...
【简答题】A．It was decided by the father. B．It was decided by the mother. C．It was decided by their kids. D．It was decided by a family vote.
【单选题】以下选项中,关于斜导柱抽芯机构装配要求说法正确的是( )。
A.
斜导柱外侧与滑块斜导柱孔不留间隙
B.
闭模后滑块的上平面与定模底面齐平
C.
滑块上的斜导柱孔口为圆形
D.
斜导柱外侧与滑块斜导柱孔留有0.2～0.5mm的间隙
【简答题】请写出两个函数乘积f(x).g(x)的求导法则; 2、请写出两个函数的商f(x)/g(x)的求导法则。
【简答题】The doctor helped me __________ my wound with alcohol. (alcohol, symptom, cleanse, remedy, pharmacy, dizzy, cough, thermometer, vitamins, painkillers)
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