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【单选题】
MIU试验中大写字母U代表以下哪种生化试验()A.
甲基红试验
B.
尿素分解试验
C.
硫化氢试验
D.
枸橼酸盐利用试验
E.
吲哚试验
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反馈参考答案：
举一反三
【单选题】When Alice came to, she did not know how long she ____ there.
A.
had been lying
B.
has been lying
C.
was lying
D.
has lain
【单选题】When Alice came to, she did not know how long she there.
A.
had been laying
B.
has been lying
C.
was laying
D.
had been lying
【多选题】滑片式压缩机由于具有以下（）特点，因而即使在较低的吸气压力下，也可以获得较高的容积效率。
A.
可以具有一大流通截面接管与系统的吸气管道相连
B.
气缸周边侧面上可以开有大流通截面的吸气口
C.
余隙容积很小
D.
结构紧凑，重量轻
【简答题】施工进度计划的表现形式主要有 和 两种。
【单选题】When Alice came to, she did not know how long she ( )there.
A.
was lying
B.
had been lying
C.
has been lying
D.
has lain
【单选题】When Alice came to, she did not know how long she ( )there.
A.
has been lying
B.
was lying
C.
has lain
D.
had been lying
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