皮皮学，免费搜题
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【单选题】
PLC 的内部存储器有两类,一类是系统程序存储器,另一类是( )。A.
用户程序及数据存储器
B.
ROM
C.
数据存储器
D.
模拟存储器
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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【单选题】– Amazing! You _____ have won the first prize in the national English speech contest! – I’m lucky that all my efforts have finally paid off.
A.
must
B.
may
C.
can
D.
should
【简答题】已知X和Y,请计算X+Y, 并指出结果是否溢出。 (1)X=0.11011,Y=0.11111 (2)X=0.11011,Y=-0.1010 (3)X=-0.10110,Y=-0.00001 (4)X=-0.11011,Y=0.11110
【简答题】已知X和Y,请计算X+Y, 并指出结果是否溢出。 (1)X=11011,Y=11111 (2)X=11011,Y=-1010 (3)X=-10110,Y=-1 (4)X=-11011,Y=11110
【简答题】It’s amazing that the toddler can _______ ________ to one hundred and backward.
【单选题】-- I’m afraid I have a complaint to make. -- _____________
A.
Sorry.
B.
Can I help you?
C.
What?
D.
Tell me about it.
【单选题】— ________ ? —I'd like some ink. [ ]
A.
What can you do
B.
Can you help me
C.
Can I help you
D.
What's wrong
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