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【单选题】
以下未扮演过《白毛女》中的“喜儿”的是()。A.
B.
C.
子
D.
山口百惠
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【单选题】When anaerobic bacteria convert the sewage to an inert sludge, .
A.
no oxygen is needed
B.
oxygen is necessary
C.
oxygen is given off
D.
no gas is produced
【单选题】三相异步电动机在什么情况下会出现转差率s<1,是< /div>
A.
再生制动
B.
能耗制动
C.
反接制动
D.
机械制动
【简答题】无氧呼吸(anaerobic respiration)
【单选题】As in Beijing Opera or Kun Opera, in Yue Operais a male comic character with a white patch on the nose.
A.
jing
B.
chou
C.
dan
D.
sheng
【单选题】Antiseptics(杀菌剂) have saved countless lives, but they are most effective when the bacteria they are attacking are individual cells in suspension. Once bacteria have attached themselves to solid surfac...
A.
the bacteria are floating in individual cells
B.
the bacteria pollute the medical devices in the hospital
C.
the bacteria adhere to solid surfaces, wrapped by films
D.
the disinfectants are not so standard
【单选题】Anaerobic adhesives set up into hard, strong adhesives when ______.
A.
The two parts of resin and catalyst are mixed
B.
Squeezed into thin joints which block the oxygen
C.
The solvents evaporate or penetrate porous adherends
D.
The heat source is removed
【简答题】优质肉鸡中的“三黄鸡”具有( )、( )、 ( ),三黄的特征。
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【单选题】三相异步电动机在什么情况下会出现转差率s<1,是< /div>
A.
再生制动
B.
能耗制动
C.
反接制动
D.
机械制动