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【单选题】
设 为3阶方阵,且 ,则 ( ).A.
25
B.
5
C.
125
D.
-25
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皮皮学刷刷变学霸
举一反三
【单选题】They have been tightening their belts for months, adapting themselves to a war economy.
A.
modifying
B.
adopting
C.
arranging
D.
adjusting
【单选题】The correct tightening is obtained by use of _____ to measure the extension given to the bolts.
A.
pressure gauges
B.
stretch gauges
C.
thermometers
D.
bridge gauges
【单选题】In the past few months, the country _____ a further tightening of supply restrictions, fuel and food supplies more difficult to obtain.
A.
would witness
B.
witnesses
C.
has witnessed
D.
had witnessed
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