【简答题】听说明选择答案。 Poster: Welcome to Huaxin Shopping Center F1. kitchen goods and food F2. bags and watches. F3. clothes and shoes F4. curtains and carpets. F5. electrical goods, sports and books. A 10% off B ...
【简答题】同步发电机并网的条件是:( 1 ) ;( 2 ) ;( 3 ) 。
【单选题】某肝移植患者,男性,55岁。移植术后正在使用免疫抑制剂环孢素A,医生要求其监测血药浓度,以提高药物疗效,减少不良反应。下列药物中,不需要进行血药浓度监测的是()
【简答题】图形叠置法的两种基本制作手段包括指标法和 。
【判断题】同步发电机并网的条件是:( 1 ) 发电机相序和电网相序要一致 ( 2 ) 发电机频率和电网频率要相同(3) 发电机电压和电网电压大小要相等、相位要一致。
【单选题】关于合成叠置与统计叠置的说法,正确的是()。
C.
统计叠置目的是统计一种要素在另种要素中的分布特征
【单选题】Firefighters welcome computer information because ______.
A.
they can take special care to find sick persons and remove them quickly and safely
B.
it helps them locate the burning buildings and teaches them how to put out fires
C.
it helps to save the life of injured firefighters
D.
they can learn about possible dangers and prepare for them