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【单选题】
产品A的零件废品系数为2%，在组装时的组装废品系数为5%，如A需求为100时，订单量应为：()A.
102
B.
108
C.
105
D.
107
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【单选题】A beautiful bike _______ him by his classmates. [ ]
A.
sent to
B.
will sent to
C.
was sent to
D.
will be sent for
【简答题】He insisted______the working site. A．to be sent to B．being sent to C．on being sent to D．that to be sent to
【判断题】Lauren was sent to ballet because her parents had no time to take care of her.
A.
正确
B.
错误
【简答题】___不是计算机病毒所具有的特点。
【单选题】模拟小实验：（如图准备装置）在两只烧瓶里分别充满CO2和空气，塞紧带有温度计和胶头滴管的橡皮塞。再把两只烧瓶放在红外线下照射，观察温度升高的情况。结论：两瓶在相同光线照射下，装CO2的温度较邻瓶高，最大可达4℃。据此完成下列各题。 大气中二氧化碳增多的主要原因是（） ①大量燃烧矿物能源 ②火山喷发 ③过度发展核电 ④过度砍伐森林
A.
①②
B.
①③
C.
②③
D.
①④
【单选题】It is suggested that a doctor _____ immediately. [ ]
A.
be sent for
B.
sent for
C.
is sent for
D.
should send for
【单选题】It was essential that the application forms _____ back before the deadline ( 截止日期 ).
A.
must be sent
B.
would be sent
C.
be sent
D.
were sent
【单选题】Suppose the exchange rate of the U.S. dollar was 1.50 British pounds = $1.00 (U.S.) on Wednesday, and on the following Monday the exchange rate was $.75 (U.S.) = 1.00 British pound. Which of the follo...
A.
The U.S. dollar appreciated against the British pound.
B.
The British pound appreciated against the U.S. dollar.
C.
The U.S. dollar depreciated against the British pound.
D.
Both answers B and C are correct.
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