【简答题】有两电阻R1和R2,已知R1:R2 = 1:4。若它们在电路中串联,则电阻上的电压比U1:U2= ;电阻中的电流比I1:I2 = ;它们消耗的功率比P1:P2 = 。
【多选题】在“蛟龙”号诞生之前,世界上只有( )四个国家拥有载人深潜器。
【单选题】在Word文档中,若要将一些文本内容设置为黑体字,则首先应该()
【单选题】曲轴箱的型式有三种,其刚度由大到小顺序为( )。
【简答题】有两电阻 R1和 R2,已知 R1:R2=1:3。若它们在电路中串联,则电阻两端的电压之比 ;流过电阻的电流之比 ,它们消耗的功率比 。
【简答题】求解一元二次方程ax2+bx+c=0时,某甲看错了常数项,得解2,6;某乙看错了一次项系数,得解-3,3.则原方程的解应是______.
【单选题】SECTION A CONVERSATIONS Directions: In this section you will hear several conversations. Listen to the conversations carefully and then answer the questions that follow. 听力原文:F: Doctor Smith, today I'...
A.
He came in for a routine physical checkup.
B.
He is going on vacation with his family.
C.
He feels in perfect health.
D.
He is only 36 years old!
【多选题】以下哪些是《企业内部控制基本规范》对内部监督的要求?()
【简答题】It was the summer of 1936.The Olympic s were being held in Berlin.I had trained, sweated and disciplined myself for 6 years on the running broad jump.A year before, as a college student at the Ohi...
【单选题】小文用VB程序求解一元二次方程:Ax2+Bx+C=0。课时面对下面诸多的“方法”,他感到无从下手,请你帮他选择比较合适的方法( )