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【多选题】
( ) 可以用一个直线方程 Y= a + bx 来模拟A.
固定成本
B.
低坡式混合成本
C.
半变动成本
D.
递减型混合成本
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【多选题】The drug substance is produced using the principles of
A.
synergism and antagonism
B.
chemical reaction
C.
separation and purification
D.
synergism
E.
antagonism
【多选题】The drug substance cannot be taken directly for the reasons of
A.
powder state
B.
high price
C.
the difficulty of a precise dose
D.
the stability in the administration site
E.
unpleasant taste or smell
【单选题】_____ the instructions on the packet when you take the drug and the drug, I think, will work soon. [ ]
A.
Follow
B.
To follow
C.
Following
D.
Followed
【单选题】Hurry up, kids. The school bus ______ for us now!
A.
waits
B.
is waiting
C.
was waiting
D.
waited
【单选题】Hurry up, kids! The school bus is coming. We have ____ time left.
A.
few
B.
B .a few
C.
little
D.
D . a little
【单选题】Hurry up, kids. The school bus is coming . We have ____ time left.
A.
few
B.
a few
C.
little
D.
a little
【单选题】Hurry up, kids! The school bus _______ for us!
A.
waits
B.
was waiting
C.
waited
D.
is waiting
【简答题】An inert or innocuous substance used especially in controlled experiments testing the efficacy of another substance (such as a drug) is termed .
【单选题】Don ’ t know where your kids are in the house? Turn off the Internet and they will _____ quickly. A.get up B. hurry up C. show up
A.
1
B.
2
C.
3
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