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【简答题】
小刚玩放大镜时，他用放大镜观察自己的手指，他看到手指是____ __________像，如下图甲所示；然后他用放大镜观察远处的房屋，他将看到房屋的_______________像，如下图乙所示。（选填：正立/倒立、放大/缩小、实像/虚像）
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【单选题】周期信号 f (t) 的傅立叶级数中所含有的频率分量是 ( )。 prefix="v" ns="urn:schemas-microsoft-com:vml" ?xml:namespace> prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
余弦项的奇次谐波
B.
正弦项的奇次谐波
C.
余弦和正弦项的偶次谐波；
D.
前述各选项都不对 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
【简答题】为职工无偿提供医疗保健服务属于应付职工薪酬中的“非货币福利”。 （ ）
【单选题】This book will _______ to the students of English. [ ]
A.
be of great value
B.
be of great valuable
C.
be great value
D.
be of very
【单选题】Which is not a factor influencing the changes of English spelling?
A.
Internet
B.
Media
C.
Writers
D.
Dictionaries
【单选题】This book will ______ to the students of English. [ ]
A.
be of great value
B.
be of great valuable
C.
be great value
D.
be of very value
【单选题】“Knowing English ” must mean knowing how to __________ in English.
A.
speak
B.
learn
C.
write
D.
communicate
【单选题】By saying that technical terms 'on the outskirts of the English language than ...', the writer implies that ______.
A.
they are used in the urban areas
B.
they are used in the rural areas
C.
they do not constitute the core of common speech
D.
they are not understood by English farmers
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