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【简答题】
根据冷热流体的接触情况,两种流体实现热交换的形式有__________、混合式换热和__________三种。
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皮皮学刷刷变学霸
举一反三
【单选题】Young people are not ______ to stand and look at works of art they want art they can participate in.
A.
conservative
B.
content
C.
confident
D.
generous
【简答题】The crop circles were thought to be the greatest works of modern art, the signs of ______ or landing sites of UFOs.
【判断题】项目四任务1 二、判断题(正确的打“√”,错误的打“×”): 1、汽油是汽车使用最多的燃料,被点燃式内燃机采用。( ) 2、汽油的辛烷值越低,抗爆性越好。( ) 3、不同牌号的柴油可混合使用,且能改变其凝点,如-10号和-20号柴油各50%混合使用,其凝点为-15°C。( ) 4、通用在选用柴油时,要求其凝点比环境温度低3~5°C。( )
A.
正确
B.
错误
【单选题】You can see _______ in the Palace Museum. [ ]
A.
works of art
B.
work of art
C.
work of arts
D.
works of arts
【单选题】Young people are not_________ to stand and look at works of art; they want art they can participate in.
A.
content
B.
generous
C.
confident
D.
conservative
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