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【单选题】
FX系列PLC中,置位指令是( )。A.
SET
B.
RST
C.
SUB
D.
MOV
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举一反三
【单选题】—What do you usually do on Sunday? —I usually volunteer at an animal hospital the animals.
A.
take risks
B.
to take risks
C.
look after
D.
to look after
【单选题】He asked what I ____that poor animal.
A.
agreed with
B.
did with
C.
called on
D.
took care
【简答题】设函数【图片】,则【图片】在点【图片】的值为
【单选题】—What does this modern-day dinosaur look like? —The tongue of this animal can be extended _____ of its body.
A.
more than twice the length
B.
twice more than the length
C.
more than the length twice
D.
more twice than the length
【单选题】设函数【图片】在点【图片】有偏导数【图片】和【图片】，则【图片】是【图片】在点【图片】有极值的【图片】
A.
必要而非充分条件
B.
充分而非必要条件
C.
充分必要条件
D.
既非充分条件又非必要分条件
【简答题】What kind of animal is the coyote described as?
【单选题】What aspect of animal experimentation does the professor mainly discuss?
A.
How harmful it is to animal protection.
B.
How useless it is for the medical care.
C.
How its development differs from that of others,
D.
How it develops from an early ag
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