含有某些表面活性剂的液体药剂因温度变化而出现由澄清变为混浊或分层的现象,称为()
A.胶体溶液型液体药剂
B.破裂
C.起昙
D.溶胶剂
E.絮凝
参考答案:C
气源系统隔离活门安装位置是:()
A、左右隔离活门装在左空调设备舱,中央隔离活门装在左主轮舱前部。
B、左右隔离活门装在右空调设备舱,中央隔离活门装在左主轮舱前部。
C、左右隔离活门分别装在左右空调设备舱,中央隔离活门装在左主轮舱前部。
D、左右隔离活门分别装在左右空调设备舱,中央隔离活门装在右主轮舱前部。
I have no doubt that if the students’ interest in the subject is aroused, they will () the challenge and commit more of their time and energy to their studies.
A. face up to
B. keep pace with
C. stand out against
D. fall back on