利用温度传感器检测( )，实时控制冷却塔风机启停台数。
A．冷却塔外气温 B．冷却塔出水温度C．冷却塔风机温度 D．冷却塔内温度
参考答案：B
咸味药的作用是（）
A.收敛固涩、补益肝肾
B.泻下攻积、清热利尿
C.软坚散结、泻下通便
D.软坚散结、利水消肿
E.缓急止痛、补血活血
Suspecting the traveler of carrying drugs，the Customs official stopped him and________his suitcase，
but found nothing at all.[ ]
A．looked up
B．went through
C．searched for
D．referred to
