A.用戶變量B.時間變量C.系統(tǒng)變量D.存儲變量
A.指令B.網(wǎng)絡C.系統(tǒng)D.變量
A.IF條件1THEN語句[ELSEIF條件2THEN語句][ELSE 語句]END IFB.IF條件1THEN語句[ELSEIF條件2THEN語句][ELSE 語句]C.IF條件1語句[ELSEIF條件2THEN 語句][ELSE 語句]END IFD.條件1THEN語句[ELSEIF條件2THEN語句][ELSE 語句]END IF