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【单选题】
There some eggs on the plate, but there any bread on it. [ ]A.
are ; aren't
B.
are ; isn't
C.
is ; isn't
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反馈参考答案：
举一反三
【单选题】PLC也并非十全十美,下列选项中对PLC缺点描述错误的是:( )。
A.
价格还比较高
B.
工作速度较计算机慢,输出对输入的响应有滞后现象
C.
使用中、高档PLC,要求使用者具有相当的计算机知识
D.
出现故障时,较困难排除
【单选题】The ( )which is found in the room after the guest check out should be kept for 6 months-1 years.
A.
s hampoo
B.
d rinks
C.
book
D.
c urrency
【单选题】In London an investor can buy a U.S. dollar for £0.6102. In New York the £/$ exchange rate is the same as found in London. Given this information, what is the $/£ exchange rate in New York?
A.
$1.6388/£
B.
£0.6102/$
C.
£1.6388/$
D.
$0.6102/£
【单选题】S everal skeletons of another early whale, Basilosaurus, were found in sediments left by the Tethys Sea and now exposed in the Sahara desert. The word “exposed” in the passage is closest in meaning to...
A.
explained
B.
visible
C.
identified
D.
located
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