皮皮学,免费搜题
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搜题
【单选题】
Which of the following refers to the cost of switching from one product to a competing product?
A.
Operational cost
B.
Switching cost
C.
Inventory cost
D.
Competitive advantage
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【判断题】The platform is one example of packaging component
A.
正确
B.
错误
【单选题】The platform is ______________ the left side of the train.
A.
by
B.
in
C.
of
D.
on
【简答题】The platform is wet and slippery. Please walk slowiy.
【单选题】Wearing a harness with a lanyard attached to the platform can provide extra protection against falls,especially while the platform is in motion.
A.
safety belt
B.
protective clothing
C.
hard hat
D.
safety gloves
【单选题】-Why didn't you lock the door before you left? -I_____, but I forgot.
A.
should
B.
must have
C.
should have
D.
could have
【判断题】十二指肠全部,均属于腹膜外位器官。 ( )
A.
正确
B.
错误
【单选题】半水石膏的化学式:
A.
Ca(SO4).2H2O
B.
CaSO4
C.
2Ca(SO4).H2O
D.
2Ca(SO4).2H2O
【简答题】普通水泥的代号是( )
【单选题】普通水泥的代号是()。
A.
P²S
B.
P²C
C.
P²O
D.
P²Ⅱ
【简答题】The platform is ______________ the left side of the train.