请教几道英文的模电专业题目

请教几道英文的模电专业题目Which is the physical state of a MOS transistor which is switched on？²Accumulation²Cut-off²Strong inversionStatement i): The small signal output resistance of a MOS transistor decreases with increasing bias current.Statement ii): An Operating Point analysis (OP) is not requirement to determine the small signal AC gain of a circuit.Which of the following is correct？²Statement i) is true; Statement ii) is true.²Statement i) is true; Statement ii) is false.²Statement i) is false; Statement ii) is true.²Statement i) is false; Statement ii) is false.Statement (i) the output resistance of an ideal current source is expected to be very small (almost zero).Statement (ii) An N-input CMOS encompasses N+2 transistors.Which of the following is correct？²Statement (i) is true & Statement (ii) is true²Statement (i) is true & Statement (ii) is false²Statement (i) is false & Statement (ii) is true²Statement (i) is false & Statement (ii) is false请牛人指点，小妹在此谢过！