【判断题】运输是被动型服务的,更追求物流的效率,而配送是主动型服务的,以服务优先。
【单选题】对于一个放大电路来说,一般希望其输入电阻( ),以减轻信源的负担。
【简答题】对于一个放大电路来说,一般希望其输入电阻 _____, 以减轻信号源的负担;对于一个放大电路来说,一般希望其输出电阻 _____, 以增大带负载的能力。
【多选题】Listen to the excerpt from Listening 2. Choose the phrases Tom uses.
B.
Could you say that again, please?
C.
Could you repeat that?
【判断题】对于一个放大电路来说,一般希望其输入电阻大些,以减轻信号源的负担,输出电阻小些,以增大带负载的能力。
【单选题】Choose the correct words or phrases to complete the sentences. I would have told him the answer ____, but I was so busy then.
C.
would it have been possible
【多选题】Watch the video. Choose the phrases you hear.
【多选题】Watch the video. Choose the phrases you hear.