多项选择题

管理方法按其作用原理可分为（）

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单项选择题

11.1) This Sales Contract is made by and between the Sellers and the Buyers ___ the Sellers agree to sell and the Buyers agree to buy the under-mentioned goods according to the terms and conditions stipulated below:

A、whereby
B、that
C、which
D、what

单项选择题

柴油机气缸的发火，是通过_____方式实现的。

A．外部点火
B．下部点火
C．火花塞点火
D．压缩发火