EFS加密文件系统不能加密压缩文件。
参考答案:对
已知在某条件下O2的密度为1.28 g·L-1。在实验室用KClO3制O2,生成O2的平均速率为0.01 mol·L-1·min-1,则要制取500 mL O2,需要的时间为( )
A.1 min
B.2 min
C.3 min
D.4 min
. Some inventions are well received, but _____ function, they aren't very successful.
A. according to B. in terms of C regardless of D. owing to