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【单选题】
关于冷冻干燥的叙述错误的是A.
速冻引起蛋白质变性的几率小,对于酶类和活菌存保有利
B.
预冻温度应在低共熔点以下10~20℃
C.
速冻法制得结晶细微,产品疏松
D.
粘稠、熔点低的药物宜采用一次升华法
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【单选题】The town is about ______ ride from here. You ought to start right away.
A.
two hour
B.
two hour's
C.
two hours'
D.
two-hours
【单选题】6月1日起，全国（）改革在上海启动试点，立足于智能化平台，运用大数据技术，对试点范围内进出口货物实施“一次申报、分步处置”的通关管理模式。
A.
口岸一体化
B.
通关一体化
C.
口岸联检
D.
管检分离
【简答题】回答11~15题： These four introductory training courses will generally last two or three hours eachand will How long will these four introductory trainingcourses each last? Theywill generally last_________...
【单选题】The boy _____ has two lovely dogs.
A.
who live next door
B.
which lives next door
C.
whom lives next door
D.
that lives next door
【简答题】A．In June, next year. B．In July, next year. C．In June, two years later. D．In July, two years later.
【单选题】They're going to have _____ holiday next month. [ ]
A.
a two weeks
B.
two-week
C.
a two-week
D.
two weeks.
【单选题】To make some changes, ______ is a critical period.
A.
the next two years
B.
the next five years
C.
the next ten years
【简答题】从理论上说，某地出现高潮的时间是：
【简答题】时间序列数据的编制原则是什么？
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