Which of the following conditions is true concerning a flammable liquid with a concentration above the upper explosive limit?
A.The mixture is too lean to burn
B.The mixture is too rich to burn
C.The vapor is about to explode
D.Conditions are perfect for combustion
第1题:
A. followed,followed
B. followed,following
C. following,followed
D. following,following
第2题:
A query is used to search through the database to locate a particular record or records, which conform. to specified (75) .
A.criteria
B.standards
C.methods
D.conditions
第3题:
The speech which he made __________ the project has bothered me greatly.
A) being concerned B) concerned C) be concerned D) concerning
D
The speech concerning ……有关……的讲座
第4题:
We will hold a meeting ____ your complaint.
A: to concern
B: concern
C: concerned
D: concerning
第5题:
下面含有“易燃性”意思的单词有( ):
A.explosive
B.radioactive
C.poisonous
D.flammable
第6题: