【单选题】In one type of laboratory test all the variables _______ one are controlled.
【简答题】我出口某商品,原报价为1000 美元 / 桶CIF纽约,现外商要求将价格改报为CFRC5%。已知保险金额为CIF价的110%,保险费率为1.0%,试计算该商品CFR净价为多少元? CFRC5%报价为多少元?如果单位国际运费为5元 / 桶,则FOB报价为多少?
【判断题】Plywood is one type oflaminate composites with isotropic properties.
【单选题】李先生,臀部出现2cm×2cm的创面,且有黄色渗出液。此皮肤改变为压疮的:
【单选题】I prefer _____ with a pen rather than _____ on the computer, because I type so slowly. [ ]
【单选题】About Type-I error, which one is wrong?
A.
The probability of making a Type-I error is denoted by α(alpha).
B.
A Type-I error is committed when H1 is accepted while Ho is true.
C.
A Type-I error is committed when Ho is accepted while Ho is false.
D.
The probability of making a Type-I error is known, which is exactly the significance level α,often 0.05
【简答题】Write out the name of the symbol of Ho ( )