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【多选题】
关于I型超敏反应，描述正确的是A.
与肥大细胞有关
B.
由过敏性介质引起
C.
通常在几分钟内出现
D.
一般无组织细胞的损伤
E.
IgG可促进肥大细胞脱颗粒
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皮皮学刷刷变学霸
举一反三
【单选题】小微企业创办原则是( )。
A.
志向要小、计算要精、规模要小
B.
志向要大、计算要精、起步要稳
C.
志向要大、计算要精、规模要大
D.
志向要大、计算要大、规模要小
【单选题】Task 2 Directions: This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 through 45. Pat O' Burke was a poor Irishman with a large family, and one morning, waking u...
A.
a rich man who owned a big wood
B.
a poor Irishman who lived all by himself
C.
a clever man who got something to eat for his breakfast
D.
an Irish hunter with a large family
【单选题】Task 2 Directions: This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 through 45. Ice draws the Dutch (荷兰人) outdoors with a force as old as their history. Ask an...
A.
ice has a long history which forces the Dutch to leave their homes
B.
ice is an old force in Dutch history that pushes people to engage in outdoor activities
C.
ice-sports have long since been the Dutch favourite outdoor activities
D.
ice-sports have long since been the force in Dutch history
【简答题】A particle moves along the x-axis. Its displacement at time t is . The greatest positive displacement of the particle is .
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