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【单选题】
物流学科研究的对象是 ( )
A.
物流要素
B.
物流技术
C.
物流系统
D.
物流设备
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皮皮学刷刷变学霸
举一反三
【判断题】3DES基于DES,对1块数据用3个不同密钥加密3次。
A.
正确
B.
错误
【单选题】Unfortunately, when I dropped in, Doctor Wang_____for Chengdu to join in the fight again bird flu, so we only had time for a few words.
A.
just left.
B.
has just left.
C.
is just leaving.
D.
was just leaving.
【单选题】—What about the student in your class, Mr. Wang? —The doctor said that ________ sleep caused him poor memory and poor concentration.
A.
lacking of
B.
lacked in
C.
lacking
D.
lack for
【判断题】Dear Doctor Wang
A.
正确
B.
错误
【简答题】试举例说明什么是总体、总体单位、变量、变量值、指标与标志。
【单选题】Ms Wang is _____ nice doctor. [     ]
A.
an
B.
a
C.
/
【多选题】反射弧由哪几部分构成?
A.
感受器
B.
传入神经
C.
神经中枢
D.
传出神经
E.
效应器
【单选题】关于输尿管的叙述错误的是
A.
为细长的肌性管道
B.
沿腰大肌前面下行
C.
在小骨盆入口处跨过髂总动脉分叉处
D.
下端开口于膀胱体
【简答题】____________(夫人)Wang is a doctor.
【单选题】. Doctor Wang _____ at seven o’clock for the conference, but she didn’t turn up.
A.
should have arrived
B.
should arrive
C.
should be arrived
D.
should be arriving
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