【单选题】有随机数组 ar=np.random.randint(0,100,12), 则 ar[ar<50]= -1 的语句将
【单选题】is a measurable, verifiable work poduct such as specification, feasibility study report, detail document, or working prototype.
【单选题】关于结核分枝杆菌的培养特征,下列叙述正确的是:
【单选题】Which group of the following are the names for the digital beauties mentioned in the report?
A.
Katty-ko, Pompea, and Kaya.
B.
Katty Kowaleczko, Pompea, and Playboy.
C.
Flavio Parra, Genny Tortora, and Franz Cerami.
D.
Rodolfo Perez Ayala, Pompea, and Franz Cerami.
【单选题】Which of the following statement is true according to the passage?
A.
55% of technical reports published in scientific journals are written by scientists doing their research in America.
B.
35% of all scientific journals are issued by American scientific societies.
C.
35% of all scientists come from America.
D.
35% of all scientists are doing research at American institutions.
【单选题】Which of the following statement about a friend's influenceis false according to the report?
A.
Friends had more influence than family members on people whobecame obese.
B.
Even if the friend lives far away, the influence stillremained.
C.
People were not likely to lose weight when they have skinnyfriends.
D.
The greatestinfluence of all was between close mutual friends.
【简答题】副结核病是由副结核分枝杆菌(MAP)引起的,以顽固性肠炎和进行性消瘦为特征的人畜共患传染性疾病,会对养殖业造成严重的经济损失。 (1)MAP与人体细胞在结构上最主要的区别是________。吞噬细胞是MAP感染早期的主要宿主细胞,MAP进入吞噬细胞后会在_______中被消化分解。 (2)细胞凋亡是一种由 决定的细胞程序性死亡,吞噬细胞的凋亡对于机体限制MAP的繁殖十分重要。研究人员研究了MAP菌...