搜题请搜索小程序“爱下问搜题”
问题
判断题
转速在800r/min以下的柴油机为低速柴油机。
答案
参考答案：错
选择题
Janet as well as most of the other students who ____ abroad for further study ____ up in the countryside.
A. were sent; brought
B. were sent; was brought
C. was sent; were brought
D. was sent; brought
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单项选择题
以下对于期货与期权的描述错误的是（）
A.都是金融衍生品
B.买卖双方权利和义务不同
C.保证金规定相同
D.风险和获利不同
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