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【简答题】
苷类是______与另一非糖物质通过______连接而成的一类化合物，苷中的非糖部分称为______。苷中的苷元与糖之间的化学键称为______，苷元上形成苷键以连接糖的原子，称为______，苷元通过氧原子和糖相连接而成的苷称为______，根据形成苷键的苷元羟基类型又可分为______苷、______苷和______苷等。其中苷元上的羧基和糖的端基羟基脱水缩合而成的称为______苷。即易被稀酸水解又能被稀碱水解的是______苷。
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【单选题】______ they have boldly undertaken the construction of a 26 storied: building.
A.
As they are young
B.
Young as they are
C.
They are as young
D.
As young as they are
【简答题】A．develop B．produce C．build D．grow
【简答题】What's the definition of logistics? In a narrow sense, logistics is the flow and storage of goods from the point of origin to the point of consumption.
【单选题】It ______ the workers about 20 months to build the Huhang highspeed railway.
A.
took
B.
spent
C.
cost
D.
paid
【单选题】Tengwang tower is a nine-storied structure at 57.5 meters _____
A.
highly
B.
high
C.
height
D.
in height
【单选题】Request 20 degrees heading change left of track to avoid the build up
A.
Request turn left heading 20 degrees detour the CBs
B.
Request track out 20 degrees left to circumnavigate the thunderstorm.
C.
Request 20 degrees turn left to the build-up
D.
Request build up a new round to avoid 20 degrees turn left.
【简答题】电路 所示。已知直流电源的端电压 ,测得 ,若将直流电 源的电压 U 提高到 10V ,试问这时的 I 是等于、大于还是小于 ?
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