330MW机组发电机过电压保护投过压I段和过压II段，动作值分别为（）。A、120V

Jerry had worked hard for his chemistry examination so that he could be sure of passing it at his first_____ .

A．assumption

B．appetite

C．attempt

D．accumulation

地下水位下降会增加土层的自重应力，从而引起地积沉降。

The ______ man told us his past days before he _______. His _____ made us very sad.   [ ]

A. dying; died; death  

B. dead; dying; die  

C. dead; died; dying  

D. dead; dying; death

男性患者，58岁，诊断为肝硬化失代偿期。查体，脾大，腹部移动性浊音阳性。可疑合并大叶性肺炎时，下列哪项腹腔积液检查结果对诊断最有意义

A．外观呈淡黄色
B．比重＜1.018
C．蛋白＜30g/L
D．细胞数＜200/L，且以内皮细胞为主
E．白细胞数增加，且细胞以单个核细胞为主

精神文明建设的根本任务是什么？