单选题:土压式盾构开挖控制说法正确的是(  ) 。

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题目内容:
土压式盾构开挖控制说法正确的是(  ) 。 A.以土压和排土量控制为主,以塑流性改良.盾构参数控制为辅
B.以土压和盾构参数控制为主,以排土量.塑流性改良控制为辅
C.以土压和塑流性改良控制为主,以排土量.盾构参数控制为辅
D.以土压控制为主,以排土量.盾构参数和塑流性改良控制为辅

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