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【单选题】
一般在下列哪一种溶剂中合成格氏试剂?A.
醇
B.
醚
C.
酯
D.
石油醚
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反馈参考答案：
举一反三
【单选题】The interest rate expressed in terms of the interest payment made each period is called the _____ rate.
A.
periodic interest
B.
daily interest
C.
effective annual interest
D.
stated annual interest
E.
compound annual interest
【单选题】下列关于常用塞尺的描述中,错误的是( )。
A.
平塞尺常用厚度为1 mm、2 mm、3 mm
B.
圆柱塞尺多用于成形铣刀对刀，常用直径为3 mm、5 mm
C.
平塞尺和圆柱塞尺的尺寸均按h6精度制造
D.
塞尺常用T7A钢制造，淬火后硬度要求达到55～60HRc
【单选题】Which of the following statements is correct?
A.
Governments may choose to raise interest rates so that the level of general expenditure in the economy will increase
B.
The normal yield curve slopes upward to reflect increasing compensation to investors for being unable to use their cash now
C.
The yield on long-term loan notes is lower than the yield on short-term loan notes because long-term debt is less risky for a company than short-term debt
D.
Expectations theory states that future interest rates reflect expectations of future inflation rate movements
【单选题】The couple were ______ to each other by their interest in classical music.
A.
pulled
B.
drawn
C.
moved
D.
taken
【简答题】简要说明 PSD 和 JPEG 格式的优缺点。
【单选题】Each of the students in our class______great interest in English and they each______a copy of A New English-Chinese Dictionary.
A.
shows; have
B.
have; has
C.
is; have
D.
takes; has
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