每生产25～30锅麦汁，应该用碱水煮锅一次，随同设备附件、管道走碱水后，用清水冲净。
参考答案：错
筋将衰惫之象为（）
A．白睛发红
B．两眦赤痛
C．睑缘赤烂
D．全目赤肿
E．两眦红润
—Excuse me, could you tell me________ ?
— Wait a moment. It is coming in ten minutes.
A．where the next train will arrive
B．if the next train will arrive
C．how soon the next train will arrive
D．how often the next train will arrive
