Solar cells have been developed primarily to ____ electric power for spacecraft. A、ensureB、storeC、secureD、provide

Solar cells have been developed primarily to ____ electric power for spacecraft.

A、ensure

B、store

C、secure

D、provide

相关考题：

The film in my camera is finisheD.I need to get it _____. A.cutB.cleaningD.to testD.developed
查看答案
How long() you() a member of the club? A.have,,joinedB.have,,beenC.has,,joinedD.has,,been
查看答案
Where ________ you ________?A.are/beB.have/beC.is/beD.have/been
查看答案
Why()the old block of flats()demolished next month? A、are…beingB、is…beingC、has…beenD、have…been
查看答案
The political situation in the region has deteriorated rapidly.A: improvedB: changedC: worsenedD:developed
查看答案
Many forms of cancer can be cured if detected early.A:discoveredB:selectedC:operatedD:developed
查看答案
He advanced a novel theory during the seminar.A:moved B:inventedC:furnished D:developed
查看答案
One-room schoolhouse can still be found in isolated areas of North America.A:bareB:deprivedC:remoteD:developed
查看答案
2、细胞计数法一般用血球计数板，以什么来表示？A．cells/mLB．cells/LC．cells/μLD．cells/100mL
查看答案
细胞计数法一般用血球计数板，以什么来表示？A．cells/mLB．cells/LC．cells/μLD．cells/100mL
查看答案
热门标签