【单选题】My friend has Guangzhou for four years. [ ]
【单选题】Staying in hospital and taking special medicines ________ drug users an opportunity to stay away from drugs, which is________ the key to breaking the addiction to drugs lies.
【单选题】日期格式的字符串为
A.
^\d{4}-\D{1,2}-\d{1,2}
B.
^\d{4}-\d{1,2}-\D{1,2}
C.
^\d{4}-\D{1,2}-\D{1,2}
D.
^\d{4}-\d{1,2}-\d{1,2}
【判断题】活动规标使用时,将活动规标整平,调节水平微动螺旋,可移动舰标对准视准线,在分划尺和游杆上进行读数。一般可精确到0.2mm。
【单选题】在反馈控制系统中,给定值为r,被控量为y,对无差控制系统,其超调量为 。
【单选题】According to Paragraph 4, McCreevy objects to the IASB's attempt to ______.
A.
keep away from political influences.
B.
evade the pressure from their peers.
C.
act on their own in rule-setting.
D.
take gradual measures in reform.
【单选题】在反馈控制系统中,给定值为r,被控量为y,对无差控制系统,其超调量σ p 为( )。
【单选题】Anyone who breaks the law could hardly ________ it. [ ]
【单选题】正弦规是配合使用()按正弦原理组成标准角,用以在水平方向按微差比较方式测量工件角度和内、外锥体的一种精密量仪,一般用于测量小于45°的角度。