【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
【单选题】Which of the following is NOT the objective of the introduction of a speech?
A.
Get the attention and interest of the audience.
B.
Show off the speaker’s good spoken language.
C.
Establish the speaker's credibility.
D.
Preview the body of the speech.