上密阀漏煤不会影响高炉正常放料。()
参考答案:错
—Why do you always lie to our mother you love her cooking?
—It's only a white lie, so _______.
A.don't bother
B.my pleasure
C.it's no big deal
D.mention it
锚索安装48小时后,如发现预紧力下降,必须及时补拉。张拉时如发现锚固不合格,必须()。
A、补打合格的锚索
B、补打锚杆
C、打点柱