变压器油的凝固点不高于-100C,闪点不低于1400C,适用于气温不低于-100C的地区作为变压器用油的牌号为()。
A.DB-10
B.DB-25
C.DB-45
参考答案:A
短文改错(满分10分)
Yesterday, I went to have lunch in a restaurant. The restaurant was such crowded that the food arrived late and the fish was cold. I was on a hurry, so I started eating the food anyway. Several minute later, a server came to me and was asked how I liked the meal. In that situation, he may choose to say honestly that you are disappointing that the food came out cold. However, I choose not to tell the truth. With a smile on my face, I told the server nothing satisfied me. I told lie. But it made the server happily.
金属切削机床地基一般为()m。
A.0.1~0.2
B.0.2~0.3
C.0.5~0.1
D.0.5~2