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【单选题】
液体培养基主要用于A.
分离单个菌落
B.
增菌
C.
检测细菌毒素
D.
观察细菌的运动能力
E.
鉴别菌种
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反馈参考答案：
举一反三
【单选题】He was usually very kind so that his sudden _________ greatly surprised us.
A.
shrewdness
B.
optimism
C.
harshness
D.
uprightness
【单选题】An Intranet is (71) the application of Internet technology within an internal or closed user group．Internets are company and not do not have a (72) connection to the Internet．Usedproperly an Internet ...
A.
simple
B.
simply
C.
singlc
D.
singly
【简答题】● For （71） service, we need a virtual-circuit subnet. Let us see how that works. The idea behind virtual circuits is to avoid having to choose a new （72） for every packet sent. Instead, when a connect...
【单选题】For (71) service, we need a virtual-circuit subnet. Let us see how that works. The idea behind virtual circuits is to avoid having to choose a new (72) for every packet sent. Instead, when a connectio...
A.
connectionless
B.
connection-oriented
C.
datagram
D.
telegram
【单选题】Historians can't tell us when, where or 【71】 the first food was cooked. In earliest 【72】 when people had eaten their food 【73】 , an fire was used only to provide heat and light. The first primitive co...
A.
who
B.
which
C.
how
D.
what
【单选题】—Pandas are very beautiful, _______ kind of shy. Do you think so? —Sure. And they are the treasure of our country.
A.
and
B.
so
C.
but
D.
or
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