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【判断题】
为了保证锅炉的正常工作和安全蒸汽锅炉还必须装设安全阀,水位表,高低水位警报器,压力表,主汽阀,止回阀等。A.
正确
B.
错误
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举一反三
【简答题】[ A] joined [ B] attached [ C] connected [ D] fastened
【简答题】A.combined B.compared C.connected D.fastened
【简答题】18 按照骨骼的形状分类,下颌骨属于_______________
【单选题】How were the blocks fastened?
A.
The blocks were fastened with concrete.
B.
The blocks were fastened by using an old method
C.
The blocks were fastened by nails.
D.
The blocks were not fastened very tightly.
【多选题】What if the passenger seems not to securely fastened the seat belt before landing?
A.
Please release your seatbelt.
B.
Please make sure that your seatbelt is securely fastened.
C.
Slip the belt into the buckle and pull tight.
D.
Please remain your seatbelts fastened.
【多选题】What if the passenger seems not to securely fastened the seat belt before landing?
A.
Please release your seatbelt.
B.
Please make sure that your seatbelt is securely fastened.
C.
Slip the belt into the buckle and pull tight.
D.
Please remain your seatbelt fastened.
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