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【多选题】
在选用涡轮增压轿车用机油时,机油除了最好使用规定的机油外,还可以选用( )。A.
合成机油
B.
半合成机油
C.
普通机油
D.
齿轮油
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】指出下列各对分子之间存在的分子间作用力的类型(取向力、诱导力、色散力和氢键)。 (1) CS 2 和 CCl 4 ; (2) HCl 和 HI ; (3) CH 3 Cl 和 CH 2 Cl 2 ; (4) H 2 O 和乙醇;
【单选题】--- Has your uncle ever been to Tibet ? ---___________________________.
A.
No, he didn't
B.
No, he haven't
C.
No, never
【单选题】Why is Robert not sure of joining the group?
A.
He hasn't practiced for ages.
B.
He doesn't have time to practice.
C.
He isn't interested in joining it.
【单选题】----Don’t look down upon Bob. He has his own advantage. --- Oh, yes. _______ others are weak, he is strong.
A.
If
B.
When
C.
Where
D.
Though
【单选题】______, he couldn't earn enough to support the family.
A.
Hard as he worked
B.
As he worked hard
C.
As hard he worked
D.
Hard as did he work
【单选题】— My father's just back from work, ? — . He is having a rest in the room. [ ]
A.
hasn't he; Yes, he has.
B.
has he; No, he hasn't.
C.
isn't he; Yes, he is.
D.
Is he; No, he isn't.
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