关于辅助成膜的说法错误的是（）。
A.不能单独构成涂膜
B.包括溶剂和辅助材料
C.改善成膜及使用性能
D.对涂膜性能起主要作用
参考答案：D
根据图片所示补全对话，一空一词。
A: Class Five ______(1)a fashion show last Friday. Did you go there?
B: Yes, I _________(2).
A: But I ________(3) see you.
B: There were too many people. I didn't see you, either.
A: There was a _____(4) at the show. Did you_______(5)_her?
B: What did she wear?
A: She________(6) a black________(7) and long brown ________(8).
She had black hair in a _________(9).
B: Did she wear________(10)?
A: Yes.
B: Yes, I noticed her. She looked very cool.
（）是系统负荷高时，将上库的水放下来推动水轮发电机组（水轮机+发电机）发电，以补充系统中电能的不足。
