警察是国家机器的重要组成部分,是阶级专政的重要工具。( )
参考答案:对
一次性使用血袋如装有保存液,可直接抽取袋内液体作为无菌试验试供液。如未装保存液,则应按袋内表面积加入无菌无热原的生理盐水,在37℃下保存72小时,振摇,作为试供液。袋内表面积和生理盐水容积分别为()
A.1cm21ml
B.2cm21ml
C.5cm21ml
D.10cm21ml
E.10cm25ml
—I hear your journey was not very pleasant.
—But for the sudden rain we _______ a wonderful time.
A.will have
B.should have
C.should have had
D.had