【单选题】What distinguishes the end-Permian mass extinction from other similar devastations?
A.
Change of ocean chemistry.
B.
Survival of Miocidaris.
D.
Ecological reorganization.
【多选题】͟͟ 可通过溢菌现象初步确定为细菌病害。
【单选题】What distinguishes an extended example from other types of examples?
C.
It is given in passing.
D.
It provides more details.
【单选题】What distinguishes Chinese calligraphy from other calligraphic arts?
C.
the nature of Chinese characters
D.
the elasticity of the paper
【多选题】面对新形势与新任务,我们要更加坚定自觉地贯彻政治建军要求,充分发挥政治工作生命线作用,确保部队建设正确的政治方向。着力培养( )军人,锻造“四铁”过硬部队,确保我军永远立于不败之地。
【单选题】政治建军是人民军队的立军之本,任何时候任何情况下都不能有丝毫松懈。面对新的形势和任务,我们要更加坚定自觉地贯彻政治建军要求。以下关于政治建军说法正确的是:( )①政治建军,就是要坚决贯彻党对军队的绝对领导②政治建军,要把理想信念在全军牢固立起来,把坚定官兵理想信念作为固本培元、凝魂聚气的战略工程③政治建军,要把党性原则在全军牢固立起来,坚持党性原则是政治工作的根本要求④政治建军,要把战斗力标准在全...
【单选题】What distinguishes stem cells from other cell types?
A.
Although all cell types can divide, only stem cells differentiate after division.
B.
Stem cells are able to divide to produce populations of cells that differentiate into a related set of cells.
C.
Stem cells divide asymmetrically to give rise to one daughter cell that remains a stem cell, and a second daughter cell that differentiates into one or more cell types.
D.
Stem cells have a special type of cell division in which they form small stems that then pinch off to give rise to the daughter cell.
【单选题】列车甲和乙并排停在某站,当列车甲启动后,列车乙还未启动,此时列车乙内一乘客看到自己所乘的列车动了,他选取的参考系是
【多选题】面对新的形势和任务,我们要更加坚定自觉地贯彻政治建军要求,充分发挥政治工作生命线作用,确保部队建设坚定正确的政治方向。要着力培养( )的新时代革命军人。