【单选题】革兰氏染色时最好选择处于( )的微生物细胞进行染色
【单选题】革兰氏染色时最好选择处于( )的微生物细胞进行染色
【单选题】This text indicates that the basic component of scientific research is ______.
【判断题】p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px SimSun; color: #000000} 革兰氏染色时最好选择处于稳定期的微生物细胞进行染色
【单选题】The author implies that ______.
A.
it is sometimes easier to detect supernovas by observation of the X-ray spectrum than by observation of visible wavelengths of light
B.
life on the earth is endangered by its constant exposure to radiation forces that are released by a supernova
C.
recently discovered meteorites indicate that the earth and other planets of our solar system survived the explosion of a supernova several billion years ago
D.
lighter elements are formed from heavier elements during a supernova as the heavier elements are torn apart
【判断题】革兰氏染色时最好选择处于稳定期的微生物细胞进行染色
【单选题】在计算机中1MB的含义是()。
E.
字节(Byte)是电脑存储容量的基本计量单位。1024KB=1M(兆)B,字节(Byte)简写为B
【单选题】下列说法错误的是( )。
A.
当楼房突然发生火灾时,首先要强令自己保持镇静,切不可惊惶失措,以免做出错误的决断
D.
着火时,若被火档住,通过窗口或阳台等往外逃生