不准借故推迟故障处理时间和隐瞒谎报故障。
参考答案：对
随机变量X～N(0，4)，则D(3X-1)=( )。
A．( 4．
B．( 12．
C．( 18．
D．( 36
More and more people these days are clamoring for full-body plastic surgery popularity in the world.
A．to attain B．to sustain C．gaining D．obtaining
