基金主要投资于有价证券,投资选择灵活多样,从而使基金的收益有可能高于债券,投资风险又可能小于股票。( )
A.
B.
C.
参考答案:A
The doctor came out and said the operation was well finished. The parents smiled ________ and the nervousness disappeared from their faces.
A.in relief
B.in danger
C.in peace
D.in reality
JS-9油田注水水质监测系统在微机控制下,可在40min之内完成()个项目的监测,及时提供水质参数。
A.6
B.7
C.8
D.9