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【判断题】
有效热效率是指发动机实际循环有效功与所消耗热量之比。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】发光强度是光线在给定方向上发光强度的度量，其单位为（）。
【单选题】You need to go through _____check at the airport.
A.
health
B.
security
C.
body
D.
job
【单选题】When you go through security at the airport, your shoes ____ for inspection.
A.
must remove
B.
must be removed
C.
must be removing
D.
must have removed
【多选题】When arriving at a destination airport, What formalities does a passenger go through?
A.
go through immigrations.
B.
check in luggage.
C.
claim checked luggage
D.
go through the Customs.
【单选题】All people must go through security check, _____ airport staff.
A.
to include
B.
including
C.
includes
D.
included
【单选题】You have to go through ___ before you can leave the airport.
A.
custom
B.
customer
C.
customs
【简答题】写出商品的8位数编码:高速平台式绘图机(中传品牌)( )
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