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【简答题】
序逻辑电路与组合逻辑电路的主要区别是 ( ) 。 A. 时序电路输出与输入之间存在反馈,组合电路则没有 B. 时序电路必包含组合电路 C. 时序电路具有记忆功能,组合电路则没有 D. 时序电路中必含有记忆元件,组合电路则不含记忆元件 A. C
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反馈参考答案：
举一反三
【简答题】酶的活性中心包括 和 两个功能区。
【单选题】Oceanography has been defined as 'The application of all sciences to the study of the sea'. Before the nineteenth century, scientists with an interest in the sea were few and far between. Certainly Ne...
A.
an academic aspect
B.
a military aspect
C.
a business aspect
D.
an international aspect
【单选题】Oceanography Oceanography has been defined as 'the application of all sciences to the study of the sea． Before the nineteenth century, scientists with an interest in the sea were few．Certainly Newton ...
A.
oceanographic studies
B.
military purposes
C.
business considerations
D.
investigating the depths of the oceans
【单选题】( ) has been defined as a 'threat of harm made to compel a person to do something against his or her will or judgment; especially, a wrongful threat made by one person to compel a manifestation of see...
A.
provision
B.
consideration
C.
duress
D.
binding
【简答题】磁场型交通信息采集技术是利用( )进行交通信息的检测 环形线圈有一定的工作电流,当有车辆通过线圈或存在于线圈之上时,线圈的( )会发生相应的变化 环型感应线圈采集系统构成包括( ) 、接线盒、 ( ) 、 ( )等 地磁检测器的检测原理是,当铁质物体通过时会引起地( )异常,...
【单选题】病人,男性,54岁。1周前尿量减少,约500~600ml/D,食欲差、双眼睑水肿就诊。查体:血压170/100mmHg。实验室检查:血肌酐726μmol/L,尿素氮26.8μmol/L,血钾6. 5mmol/L, RBC 2.35x10的12次方/儿,HB 70g/L。初步诊断为肾功能衰竭收住入院。该病人每天摄人的液体量应为( )
A.
前一天的尿量加上500ml
B.
500ml
C.
600ml
D.
700ml
E.
800ml
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