To avoid the pumps being shut down due to malfunction in the control system, they can only be switched off by a firefighter.
Amomentarily
Bseverely
Cvoluntarily
Dmanually正確答案
答案與詳解
為什麼答案是 D
manually 意為『手動地』，與前文『control system（控制系統自動）』形成對比：避免自動控制故障，所以改由消防員手動關閉，完全切題。
考點：短暫地考點：嚴重地考點：自願地考點：手動地
載入中…
