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【单选题】
发动机加速无力、发动机过热、排气管放炮的主要原因是A.
点火提前角过小
B.
混合气过稀
C.
主要部件磨损
D.
A B
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皮皮学刷刷变学霸
举一反三
【简答题】As the old empires were broken up and new states were formed, new official tongues began to ______ at an increasing rate. A) bring up B) build up C) spring up D) strike up
【单选题】发热激活物引起发热主要是
A.
激活血管内皮细胞释放致炎物质
B.
促进产EP细胞产生和释放内生致热原
C.
直接作用于下丘脑的体温调节中枢
D.
刺激神经末梢释放神经介质
E.
加速分解代谢使产热增加
【单选题】直接作用下丘脑体温调节中枢引起发热的细胞因子是( )。
A.
IL-8、IL-2、IL-1
B.
IL-1、TNF-α、IL-6
C.
TNF-α、IFN-γ、LT
D.
IL-10、TGF-β、IL-6
E.
G-CSF、IL-3、GM-CSF
【单选题】直接作用下丘脑体温调节中枢，引起发热的细胞因子是
A.
IL-8 、IL-2、IL-1
B.
IL-1、TNF-α、IL-6
C.
TNF- α、IFN-γ
D.
IL-10 、TGF-β、IL-6
【单选题】It was 1995 __________ we began to develop the new computer system.
A.
when
B.
which
C.
since
D.
that
【单选题】They looked __ at the new, and some girls began to weep.
A.
sad
B.
sadly
C.
sadness
D.
sadnessly
【单选题】As the old empires were broken up and new states were formed, new official tongues began to _____ at an increasing rate.
A.
bring up
B.
build up
C.
spring up
D.
strike up
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