活塞环要保持正常间隙,若间隙过大会造成:()
A.窜气
B.机油消耗增加
C.发动机功率下降
D.卡死
参考答案:A, B, C
按要求改写句子。
1.远处蔚蓝色的海水反射出耀眼的亮光。(缩句)
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2.这是你的书。(改为反问句)
3.太阳从海面上升起了一半。(改为拟人句)
4.这不是伟大的奇观吗?(改为陈述句)
单击命令按钮时,下列程序的执行结果是 Private Sub Command1_Click() Dima As Integer,b As Integer,c As Integer a=3:b=4:c=5 Print SecProc(c,b,a) End Sub Function FirProc(x As Integer,y As Integer,z As Integer) FirProc=2*x+y+3*z+2 End Function Function SecProc(x As Integer,y As Integer,z As Integer) SecProc=FirProc(z,x,y) +x+7 End Function A) 20 B) 25 C) 37 D) 32