【单选题】每组三个标识符,下面可以用作C语言用户标识符的一组标识符是______ 。
【多选题】FELV是指使用功能(非电击防护)的原因而采用的特低电压,如( )。
【多选题】What are the techniques of being coherent in writing?
A.
repetition of key words.
B.
being related to the main idea.
C.
transitional expression.
D.
careful pronoun reference
【单选题】下列滴定中,不能准确滴定的是()
A.
0.10mol/LHCl滴定0.10mol/LNH3•H2O(KB=1.75×10-5)
B.
0.10mol/LNAOH滴定0.10mol/LNH4Cl
C.
0.10mol/LHCl滴定0.10mol/LNACN(KA=4.9×10-10)
D.
0.10mol/LNAOH滴定0.10mol/LHCOOH(KA=1.7×10-4)
【单选题】What is being discussed in this passage?
A.
The writing of a composition.
B.
The finding of materials.
C.
The writing of a research paper.
D.
The writing of an essay.
【单选题】下列滴定中,不能准确滴定的是( )
A.
0.10mol/LHCl 滴定 0.10mol/LNH3·H2O ( Kb=1.75×10 )
B.
0.10mol/LNaOH 滴定 0.10mol/LNH4Cl
C.
0.10mol/LHCl 滴定 0.10mol/LNaCN ( Ka=4.9×10 )
D.
0.10mol/LNaOH 滴定 0.10mol/LHCOOH ( Ka=1.7×10 )
【单选题】Vanish (v.) means ______ —The magician made the rabbit vanish by slipping it under a secret door. —You gave a stranger $500 in cash to paint your house? How do you know he won’t vanish with the money?
【单选题】每组三个标识符,下面可以用作C语言用户标识符的一组标识符是______ 。
【单选题】根据24节气判断以下有关上饶的描述正确的是 ( )