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【单选题】
使用过氧乙酸消毒时应注意
A.
浸泡物品浓度为0.2%
B.
消毒物品需悬挂或抖散
C.
不能用于体温表的消毒
D.
2%过氧乙酸溶液用于手的消毒
E.
放于阴凉处避免高温引起爆炸
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【简答题】Mr. White works in an office. He’s able and can easily deal with all kinds of matters.    60   . Of course he’s often busy and has no time to do the housework. His wife does all at home. Last Friday, ...
【单选题】It will be long   she sees Mr. White again at Beijing,    business has just started in Switzerland.
A.
It will be long____she sees Mr. White again at Beijing, ____business has just started in Switzerland. A.after; who
B.
since; who
C.
when; whose
D.
before; whose
【单选题】It is never easy to adapt __________ big changes. Those who can do it faster are more likely to succeed. [     ]
A.
for
B.
with
C.
in
D.
to
【单选题】大多数工业制成品的计量习惯采用( )
A.
重量计算
B.
数量计算
C.
体积计算
D.
容积计算
【判断题】Beagle犬是国际上公认的实验用犬,常用于药理学、毒理学等研究。
A.
正确
B.
错误
【单选题】—Is that man Mr. White? —It ______be him. He has gone to London on business.
A.
may not
B.
needn’t
C.
can’t
D.
mustn’t
【单选题】. Mr. White has been invited to the celebration _________ tomorrow afternoon.
A.
held
B.
being held
C.
to be held
D.
to hold
【判断题】Beagle 犬是国际上公认的实验用犬
A.
正确
B.
错误
【简答题】It can be learned from the passage that we may have ______ to work on the big project we are undertaking if someone else gets the knowledge about what were doing.
【单选题】能引起羊瘙痒病的病原体是何种病原体?
A.
细菌
B.
类病毒
C.
朊粒
D.
细小病毒
E.
真菌
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