图示等截面直梁，下列说法中正确的是 。[img=230x99]180305c5c5df0c2.png[/img] A: wA=0 , θA≠0 B: wA=0 ,θA=0 C: wA≠0 ,θA=0 D: wA≠0 ,θA≠0

图示等截面直梁，下列说法中正确的是 。[img=263x121]18035c2af036753.png[/img] A: WA=0 WB=0 B: WA≠0 WB=0 C: WB≠0 WA=0 D: WA≠0 WB≠0

图示结构，用积分法计算AB梁的位移时，梁的边界条件为( )[img=222x113]18034e23b79be4b.jpg[/img] A: wA≠0， wB=0 B: wA≠0， wB≠0 C: wA=0， wB≠0 D: wA=0， wB=0

下列程序的运行结果是（ ）。t = 0 while t < 5: print(t, " is less than 5") t = t + 1else: print(t, " is not less than 5") A: 0 is less than 51 is less than 52 is less than 53 is less than 54 is less than 55 is not less than 5 B: 1 is less than 52 is less than 53 is less than 54 is less than 55 is less than 55 is not less than 5 C: 0 is less than 51 is less than 52 is less than 53 is less than 54 is less than 5 D: 1 is less than 52 is less than 53 is less than 54 is less than 55 is less than 5

标准麻花钻横刃处前角为（ ）。 A: -54°～-60° B: -10°～-20° C: 0° D: 5°

根据乘方的意义可知：53=5×5×5，54=5×5×5×5，则53×54=（5×5×5）×（5×5×5×5）=57即53×54=57。想一想：

阅读下列代码，输出结果正确的是()Vark=0;Vari=0;While(I<5){k＋＋;If(k>5){break;}}Document.write(I,k); A: 54 B: 45 C: 55 D: 44

① 这花开得多美（　）！② 你来瞧（　）！③ 好一个硬骨头（　）！④ 真糟糕（　）！“啊”的音变正确的一组是（） A: ① （a）② （wa）③ （wa）④ （ya） B: ① （ya）② （wa）③ （wa）④ （wa） C: ① （wa）② （wa）③ （wa）④ （ya） D: ① （a）② （ya）③ （wa）④ （ya）

下列语句序列执行后，k 的值是( )。 [img=240x147]17e438c1f682886.png[/img] A: 60 B: 5 C: 0 D: 54

直接计算！4二0×5=480÷二0=30×7×二=449+98=45+408+55+9二=43×5×4=二5×36=360-90=二40÷45÷二=630÷48=40二×4二=45×44=705-498=39×9+39=4二5×3二=3二0+二60=6二0-450=430×7=360÷45=0÷54=