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【判断题】
传递函数为 的系统静态增益为 。A.
正确
B.
错误
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举一反三
【单选题】I bought a used Longman Dictionary yesterday. It ____ me only twenty yuan.
A.
spent
B.
cost
C.
used
D.
took
【多选题】Unpaid item case(UPI case)开设方法有:()
A.
电话联系eBay平台工作人员。
B.
Seller hub > Orders > Awaiting Payment > Actions > Open Unpaid item
C.
My eBay > Account > Resolution Center > Resolve a problem > I haven’t received my payment yet
D.
使用‘Unpaid Item Assistant’UPI小助手
【简答题】配制和标定KMnO 4 标准溶液错误的是( ) A．采用直接配制法 B．KMnO 4 溶液需煮沸20～30min后，才可标定使用 C．用Na 2 C 2 O 4 做基准物进行标定 D．不需外加指示剂
【单选题】I bought some CDs for my friend and they _____ me ￥30. [ ]
A.
spend
B.
paid
C.
cost
D.
used
【单选题】I bought some books for my brother and they _____ me ￥50. [ ]
A.
used
B.
spent
C.
cost
D.
paid
【多选题】网络商品直销是指消费者和生产者,或需求方和供应方直接利用网络形式开展的交易活动。B2C交易模式最大特点是( )。
A.
提供消费者和生产者直接见面
B.
交易过程的环节少
C.
交易活动速度快
D.
交易费用低
【简答题】今、そこで( )のだが、今度、この町に新しい道路が通るそうだ。
【单选题】I bought some CDs for my friend and they ______me 30 yuan. [ ]
A.
spend
B.
cost
C.
paid
D.
used
【单选题】"Where there is the book I bought?" The definite article "the" is used in the sentence for ________.
A.
generic reference
B.
definite specific reference
C.
indefinite specific reference
D.
unique reference
相关题目：
【单选题】I bought some CDs for my friend and they ______me 30 yuan. [ ]
A.
spend
B.
cost
C.
paid
D.
used
参考解析：
知识点：
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