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【判断题】
系统内质量保持恒定的热力系不一定是闭口系统A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】______, he helped me with my work.
A.
As he was tired
B.
Tired though he was
C.
Tired as was he
D.
It is because he was tired
【单选题】慢性阻塞性肺病(COPD)最确切的定义是指
A.
单纯性慢性支气管炎合并阻塞性肺气肿
B.
喘息性慢性支气管炎合并阻塞性肺气肿
C.
具有气道阻塞特征的慢支和肺气肿
D.
慢性支气管炎合并阻塞性肺气肿及肺心病
E.
支气管哮喘合并阻塞性肺气肿及肺心病
【单选题】Although he is often tired ________ his work, he is never tired ________ his job. In fact, he enjoys it. [ ]
A.
of; with
B.
with; from
C.
with; of
D.
at; with
【简答题】He was so tired that he could not walk home any longer. →He was______tired______walk home any longer.
【简答题】, the farmer continued working in the field.A．As tired he wasB．As he was tiredC．Tired as he wasD．So____, the farmer continued working in the field. A．As tired he was B．As he was tired C．Tired as he wa...
【简答题】用于喘息型慢性支气管炎：
【单选题】She is very _________ upsetting her husband, as he has a violent temper.
A.
tired of
B.
wary of
C.
keen on
D.
confined to
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