与姜片虫病的发病机制有关的是（） A.姜片虫的吸盘造成被粘附黏膜机械性损伤 B.消耗

取1mL唾液加入9mL蒸馏水作为酶液，将1mL蒸馏水及1mL酶液加入8mL1%的可溶性淀粉液中室温25℃的条件下放置的时间，反应开始后隔一定时间取少量反应液，测定淀粉的量，约30min淀粉完全被水解，可使反应速度加快的方法是[ ]

A．把实验温度改为55℃

B．不加1mL蒸馏水，而把加入的酶液变为2mL

C．将酶液加热至100℃后冷却，取其1mL加入可溶性淀粉液中

D．加入1mL1%的盐酸代替1mL蒸馏水

患者男，16岁。发热、鼻出血2周入院。浅表淋巴结不肿大，皮下瘀点、瘀斑，肝脾未触及，HGB56g/L，WBC2.2×10⁹/L，PLT22×10⁹/L，网织红细胞0.0013，胸片提示右下肺炎。

关于预后，描述准确的是 （）

A.不积极治疗多于6～12个月内死亡

B.较好，生存期长

C.一般治疗即可缓解

D.骨髓病态造血可转变为白血病

E.有染色体异常者预后不良

甲工作效率比乙高25%，甲打字2000个的时间比乙打字1800个的时间少用5分钟，问：甲、乙每小时各打字多少个？甲______个/小时，乙______个/小时．

Cloud computing is a phrase used to describe a variety of computing concepts that involve a large number of computers (1) through a real-time communication network such as the Internet. In science, cloud computing is a (2)for distributed computing over a network, and means the (3) to run a program or application on many connected computers at the same time. The architecture of a cloud is developed at three layers: infrastructure, platform, and application. The infrastructure layer is built with virtualized compute, storage, and network resources. The platform layer is for general-purpose and repeated usage of the collection of software resources. The application layer is formed with a collection of all needed software modules for SaaS applications. The infrastructure layer serves as the (4)for building the platform layer of the cloud. In turn, the platform layer is a foundation for implementing the (5) layer for SaaS applications.

空白（3）处应选择（）

A.ability

B.approach

C.function

D.method

在下列指标中，最能全面反映基金经营成果的是( )。

A．基金分红
B．净值增长率
C．久期
D．已实现收益