【单选题】电路如图所示, 该端口的输入电阻为 Ω。
【判断题】魏天无提出,读者将抽象的语言符号转变为一系列的具体意象,才能理解作品,所以,他认为读者阅读作品时所形成的意象,是一种意象感。
【单选题】电路如图所示, a-b 端口的电压 = V , 该端口看进去的输入电阻为 Ω 。
【单选题】The objective test is not very satisfactory because______.
A.
it is easy and quick to score
B.
the teacher can find out a great deal about the student's range of knowledge in a short time
C.
it shows how deeply the student has thought about the subject
D.
it contains element of luck