【单选题】血液的有效保存期如何制定的()?
A.
根据红细胞输注人体后24小时存活率75%以上时保存天数
B.
根据红细胞输注人体后24小时存活率80%以上时保存天数
C.
根据红细胞输注人体后24小时存活率为70%以上时保存天数
D.
根据红细胞输注人体后48小时存活率为70%以上时保存天数
E.
根据红细胞输注人体后24小时存活率90%以上时保存天数
【判断题】一般照明灯应采用不超过110V的对地电压。
【单选题】James Joyce’s Ulysses could hardly betermed as a traditional novel, because ______. A.it is an account of daily life B.there is no story, no plot and no action inside C.it is divided into episodes D.t...
A.
it is an account of daily life
B.
there is no story, no plot and no action inside
C.
it is divided into episodes
D.
there are only three characters
【单选题】What can we learn from paragraph 4?
A.
10, 500 competitors will compete for the new sports.
B.
More surf centers will be specially designed for Paris 2024.
C.
The IOC will reject the proposal because of inadequate facilities.
D.
The inclusion won't require additional competition space to be built.
【单选题】电子商务无须订立书面合同,其中小额简单的交易也无须电子合同,货物所有权的转让体现在()中
【单选题】增值税法律规定,以下不属于境内的含义的是( )。
【判断题】密封类(sealed修饰)不能被继承。()