船舶机动航行时,动力装置的故障应按()。Ⅰ.工作时间来衡量;Ⅱ.工作次数来衡量
A.仅l对
B.仅Ⅱ对
C.Ⅰ或Ⅱ对
D.Ⅰ+Ⅱ
参考答案:B
Her mother didn’t tell her _______ then.
A.where is the MH370 flight
B.where the MH370 flight is
C.where was the MH370 flight
D.where the MH370 flight was
糖与糖之间连接位置的确定,可采用()和()方法。