当被测压力很稳定时,则被测压力正常值应在压力表测量范围的()处。
A.1/3
B.1/2
C.2/3
D.3/4
参考答案:C
Too much drinking will do__________ to your health;you should take the doctor's advice.[ ]
A.harm
B.trouble
C.damage
D.hurt
影响VPN远程访问的三个要素是什么?