【简答题】1 x = x-1 x(x-1) 成立的条件是______.
【简答题】x>1是 1 x <1 的______条件.
【单选题】(x 2 -1) 0 =1成立的条件是( )
【简答题】阅读理解。 Mark Twain was a great writer. He was born in 1835 in the USA. He was also a famous speaker. He was famous for his sense of humour. Many people liked to listen to his talk because he liked to te...
【判断题】Mark Twain (1835-1910) is one of the prominent English realism writers.()
【单选题】分式 1 x(x-1) 有意义的条件是( )
【单选题】若分式 3 x-1 有意义,则x应满足的条件是( )
【多选题】在原始凭证上书写金额数字,正确的有()
A.
人民币符号“¥”与阿拉伯数字间不得留有空白,金额数字一律填写到角、分
B.
无角分的,角位与分位可写“00”或者“—”;有角无分的,分位可以写“0”,也可用“—”代替
C.
大写金额到元或角为止的,后面要写“整”或“正”字,有分的,不写“整”或“正”字
D.
大写金额前未印有“人民币”字样的,应加写“人民币”三个字,“人民币”字样与大写金额之间不得留有空白
【单选题】等式 x+1 ? x-1 = x 2 -1 成立的条件是( )