【单选题】The boy lost his key, so he has no choice but till his mother came home.
【简答题】单位脉冲函数的拉氏变换为_________。
【单选题】家兔是由野兔驯化而来的,兔有 ( )余个品种
【单选题】He has no choice but ______ there .
【单选题】He has no choice but ___ to enter the room.
【单选题】《企业会计制度》规定,企业在销售商品时不考虑现金折扣,现金折扣应于实际发生时计入( )。 A 管理费用 B财务费用 C其他业务支出 D营业外支出
【单选题】He has no choice but _____ to see him.
【单选题】He has no choice but it .