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【单选题】
( )不属于空调制冷系统的部件
A.
蒸发器
B.
冷凝器
C.
暖风器
D.
贮液干燥器
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【简答题】蛋白质合成后必须分选出来,定向输送到最终发挥生物功能的细胞靶部位,这一过程称为________。
【单选题】下列哪种鉴别试验现象不属于硫喷妥钠
A.
在碱性溶液中与醋酸铅试验反应生成白色沉淀
B.
与铜-吡啶试液反应为绿色
C.
焰色反应为亮黄色
D.
与铜-吡啶反应为紫堇色
【单选题】Its already dark now. Dont you think its about time______?
A.
we are having dinner
B.
we have dinner
C.
we had dinner
D.
we can have dinner
【单选题】You can trust our product as we have ______ control over its quality.
A.
strict
B.
limited
C.
little
D.
natural
【简答题】When we think of Mir in terms of its achievements,its setbacks are_________.
【单选题】We find _____ important to use a foreign language well.
A.
that
B.
it
C.
this
D.
its
【单选题】When we ___ a foreign language, we’d respect its ____, or we can’t really learn it well.
A.
speak; idioms
B.
study; ways
C.
learn; customs
D.
master; manners
【单选题】Li Pin and I are in the same school. He is a Young Pioneer. We're good friends. Li Pin is in Class 4, and I am in Class 5. This is Li Pin's room. It's not big, but new. There is a black desk in the ro...
A.
in the same school
B.
girls
C.
boys
【判断题】当上级和职位比自己高的人走来时不需要起立迎接。
A.
正确
B.
错误
【单选题】经向飞数用下列的字母表示?
A.
Sj
B.
Sw
C.
Rj
D.
Rw
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