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【单选题】
S7-200PLC用A/D转换器将外界连续变化模拟量（如压力、流量等）转换为一个字长（16位）的数字量，用区域标识符AI（）、数据长度W（字）和起始字节的地址来表示模拟量输入的地址。A.
AQ
B.
AW
C.
AI
D.
AC
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举一反三
【单选题】Working conditions generally remain bad because ______.
A.
the workers are quite satisfied with them
B.
no one can decide what to do about them
C.
managers see no need to change them
D.
office workers want to protect their positions
【单选题】From the last paragraph readers can get to know that Webb ______.
A.
is not satisfied with Western flight attendants
B.
thinks highly of the flight attendants in China
C.
encourages Chinese flight attendants to improve services
D.
admires the services of Western flight attendants
【单选题】听力原文：W: Are you satisfied with the apartment you saw today? M: Well,the living room is quite all right but the dining room is a bit smaller than I expected and the price is too high. Q: Why is the man...
A.
It is too expensive and the dining room is below expectation.
B.
The dining room is OK but the living room is too small.
C.
The living room should be a little bigger.
D.
The dining room should be a little smaller.
【单选题】There is no doubt _______ my friend is not satisfied with what they have done.
A.
that
B.
whether
C.
if
D.
why
【简答题】Directions: Do you agree or disagree with the following statement? People never satisfied with what they have. They always want something more or something different. Use Specific reasons to support y...
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