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【判断题】
模拟信号也可以与数字信号一样在计算机上进行数字信号处理，只要增加一道采样的工序就可以了。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】下列关于氟利昂说法错误的是()。
A.
氟利昂在对流程中非常稳定
B.
氟利昂在平流层中非常稳定
C.
氯离子自由基参与对臭氧的消耗
D.
氯离子自由基与臭氧发生连锁循环反应,破坏臭氧,但在反应过程中氯离子基本不消耗
【简答题】When you enter the plane, you put your luggage in the (overhead compartment) . You may need to ask a ______________ for help.
【单选题】I’ve already ___ at the hotel.Can I put my luggage in your room for a while?
A.
checked out
B.
checked off
C.
paid off
D.
paid off
【简答题】You could put your big luggage in the Left Luggage.
【简答题】When you arrive at the airport for your flight, you go to the ______ ______ first. 2. When your departing flight is announced, pick up your ________ ______ and go to the gate. 3. Before you get on the...
【单选题】Put your luggage in the van quickly () the train will be off in a minute.
A.
before
B.
so that
C.
unless
D.
now that
【单选题】I’ve already ___ at the hotel.Can I put my luggage in your room for a while?
A.
checked out
B.
checked off .
C.
paid for
D.
paid off
【单选题】手部自然修甲正确步骤是( )
A.
去除甲油－修形－消毒－清洁前缘
B.
修形－去除指甲油－消毒－清洁前缘
C.
消毒－去除指甲油－修形－清洁前缘
D.
修形－清洁前缘－消毒－去除指甲油
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