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【单选题】
在放大电路中,如果测得某晶体管三个极的电位分别为-8V、-3.3V、-3V,则这三个电极分别为[ ]。A.
C、E、B
B.
C、B、E
C.
E、C、B
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【简答题】ABB的标准I/O板提供的常用信号有哪些类型的信号?
【单选题】听力原文：M: What do you think of the director's annual report? W: I can hardly figure out what it is intended for. What is the woman's response?
A.
She doesn't know its intention.
B.
She can't understand the report.
C.
She doesn't think much of the report.
D.
She doesn't believe the exact figures in it.
【单选题】听力原文：W: Did you hear the weather report for today? W: The pollution's going to be so had they recommend staying indoors. Q: What are speakers discussing? (13)
A.
The weather yesterday.
B.
A polluted river.
C.
Hotel accommodations.
D.
The quality of the air.
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