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【单选题】
“GB 6675-2003 国家玩具安全技术规范 ” 表示的文献类型是( )A.
专利
B.
中国国家强制性标准
C.
国际标准
D.
中国国家推荐性标准
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举一反三
【多选题】What are the advantages of electronic delivery of bill of lading____?
A.
it reduces the cycle time for the forwarding and presentation of documents
B.
it reduces the costs related to manual document preparation
C.
it allows a buyer to take title to the goods once they have arrived at port
D.
an easy-to use online bill of lading generator will save time and provide the documents instantly
【单选题】观察下列选项,找出与0 . 78×4 . 8+0 . 78×5 . 2计算结果相等的算式 [ ]
A.
(0 . 78+0 . 78)×(4 . 8+5 . 2)
B.
0 . 78×(4 . 8+5 . 2)
C.
0 . 78×4 . 8×5 . 2
【单选题】Modern marine diesel engines using mechanical fuel injection, operate on a combustion cycle which is________.
A.
a combination of constant volume and constant pressure
B.
a combination of constant temperature and constant pressure
C.
entirely constant pressure
D.
entirely constant volume
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