总账输入期初余额时，（   ）由系统自动计算。
A、一级科目余额 
B、明细科目余额 
C、非末级科目余额
D、最末级科目余额

植物必需的营养元素有     种，必需的微量元素有     种。

问答题植物必需的营养元素有     种，必需的微量元素有     种。

The exam was much more difficult than we ________. A、ex...

问答题 The exam was much more difficult than we ________.
A、expect
B、have expected
C、expected
D、had expected

MOV 100 D1 ；MOV 20 D2；LD 8000 CMP D1 D2 Y1. Y1的内容是( )...

单项选择题MOV 100 D1 ；MOV 20 D2；LD 8000 CMP D1 D2 Y1. Y1的内容是( )。