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【单选题】
我国被称为“杂交水稻之父”的科学家是:
A.
爱迪生
B.
C.
D.
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参考答案:
举一反三
【单选题】My sister met him at Ningbo Grand Theatre yesterday afternoon, so he your lecture.
A.
couldn’t attend
B.
mustn’t have attended
C.
shouldn’t attend
D.
couldn’t have attended
【单选题】My sister met him at the Grand Theater yesterday afternoon, so he ______ lecture.
A.
mustn’t have attended
B.
needn’t have attended
C.
couldn’t have attended
D.
shouldn’t have attended
【单选题】My sister met him at the Grand Theatre yesterday afternoon, so he ______ your lecture.
A.
couldn't have attended
B.
needn't have attended
C.
mustn't have attended
D.
shouldn't have attended
【判断题】简单均匀控制系统结构上与简单控制系统相同,所以在控制精度、参数整定等要求也一样。
A.
正确
B.
错误
【简答题】什么是机构运动简图?绘制机构运动简图的步骤有哪些?
【判断题】均匀控制系统单从结构上看与简单控制是相同的。( )
A.
正确
B.
错误
【单选题】与主油道并联的滤清器,主油道的机油只有少量流经它,称
A.
过滤式滤清器
B.
分流式滤清器
C.
全流式滤清器
D.
以上结果都是
【单选题】My sister met him at the Grand Theater yesterday afternoon, so he ______ your lecture.
A.
couldn't have attended              
B.
needn't have attended
C.
mustn't have attended                
D.
shouldn't have attended
【单选题】My sister met him at the Grand Theatre yesterday aftemoon , so he _____ your lecture. [     ]
A.
couldn't have attended
B.
needn't have attended
C.
mustn't have attended
D.
shouldn't have attended
【单选题】My sister met him at the cinema yesterday afternoon, so he your lecture.
A.
couldn’t have attended
B.
needn’t have attended
C.
mustn’t have attended
D.
shouldn’t have attended
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