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【单选题】
关于热力学基本方程dU=TdS-pdV, 下面的说法中准确的是A.
TdS 是过程热
B.
TdS 是可逆热
C.
PdV 是体积功
D.
在可逆过程中 , PdV 等于体积功 , TdS 即为过程热
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【简答题】疳证
【简答题】在六味地黄丸的显微定性鉴别中,茯苓的特征为不规则分枝状团块无色,遇水合氯醛液溶化;菌丝无色,直径 μm。
【单选题】The basic main components of a gas turbine engine are .
A.
an air inlet, compressor, combustion chambers, the stringer, and exhaust
B.
an air inlet, compressor, combustion chambers, a turbine section, and exhaust
C.
an air inlet, compressor, combustion chambers, a turbine section, and electrostatic conductor
【单选题】The basic main components of a gas turbine engine are .
A.
an air inlet, compressor, combustion chambers, the stringer, and exhaust
B.
an air inlet, compressor, combustion chambers, a turbine section, and electrostatic conductor
C.
an air inlet, compressor, combustion chambers, a turbine section, and exhaust
【单选题】What is the TSR of a wind turbine?
A.
It is the technical safety requirements for a wind turbine
B.
It is the total stress range of the tower
C.
It is the test summary report produced before the turbine leaves the factory
D.
It is the tip speed ratio, the ratio of the speed of the tip of the blade to wind speed
【单选题】目前采用的可以控制军团菌肺炎流行的措施是:
A.
对医院内供水系统和喷雾治疗器定期监测和消毒
B.
给有免疫抑制的患者服用免疫增强剂
C.
注射亚单位疫苗人工免疫
D.
流行期间给易感者注射青霉素
E.
流行期间用乳酸熏蒸消毒居室空气
【单选题】The oscillating water column produces power from ______.
A.
the turbine that powers the generator
B.
the generator that produces electricity
C.
the cylinders that drives the turbine
D.
the air that escapes from the turbine
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