【判断题】最小显著差数法,不用经过F测验,可直接比较平均数间的差异显著性。
【判断题】当H2O的温度升高时,其pH < 7,但仍为中性。
【单选题】碳素钢是指含碳量()2.11%的铁碳合金。
【单选题】Watch Conversation 2 in "Inside view" and choose the best way to complete the sentence. Andy thinks that Joe __________.
A.
is an expert on Dickens
B.
shouldn't bring his problems to work
C.
doesn't know very much about Dickens
D.
doesn't realize when he's in a bad mood
【单选题】将CaSO4固体加入到Na2CO3溶液中,已知某温度时 , ,则CaSO4转化为CaCO3反应的标准平衡常数为:
D.
不知[SO42-]及[CO32-],无法计算
【单选题】以下程序设计语言中,____________不是高级程序设计语言。
【单选题】壮热面赤,背微恶寒,头痛头晕,心烦气粗,汗多口渴,舌红,苔黄燥,脉大而芤,治宜
【单选题】夏天,证见壮热面赤,背微恶寒头痛且晕,心烦气粗,汗多口渴,舌红,苔黄燥,脉洪大而芤,其病机为()
【单选题】_ to an expert view ,the vicyory is not yet deccided
【判断题】碳素钢是指含碳量大于2.11%的铁碳合金。