【判断题】白菜甘蓝类第一年形成叶丛和叶球,第二年抽薹开花( )
【单选题】, she remains a little girl of six although she's actually a grown woman now.
【判断题】信号是信息的一种物理体现,是信息的载体。
【单选题】Abiomed's heart distinguishes itself from Jarvik's in that______.
A.
the latter does not need connecting tubes outside the body of a patient
B.
the former needs tubes or wires coming out of patients
C.
the latter allows patients to go home and even turn around in bed
D.
the former sets patients free due to the fact that there are no tubes or wires coming out of the patients
【判断题】金属缺陷分为点缺陷、线缺陷和面缺陷,晶界属于线缺陷。
【单选题】A physician does not have the right to decide the life or death of a patient if
A.
there is no suitable level of scientific and legal sophistication.
B.
the patient expresses his own living will in a clear way.
C.
the physician does not have clear conscience.
D.
there is no wider consultation with the medical community.
【判断题】按几何特点,晶体缺陷常分为点缺陷、线缺陷和面缺陷三大类