在压缩机排气管上安装(),防止停机时制冷剂蒸气从冷凝器倒流会压缩机。
A.电磁阀
B.截止阀
C.止回阀
D.热力膨胀阀
参考答案:C
小题1:It is decided by ____whether the football match will be moved to a late date.
A.HensleySchool
B.MayfairSchool
C.bothofthetwoschools
D.theweather小题2:Harvey would like to _______.
A.borrowsomematerials
B.lendMargaretsomething
C.getsomethingback
D.haveatalkwithMargaret小题3:If you want to go out for lunch on Sunday, you can call up the number__.
A.2706030
B.3562367
C.2785161
D.7365531小题4:You do not have to pay on Monday if you go to_________.
A.SkylineHotel
B.LansdowneParkShoppingCenter
C.NewYorkMuseum
D.GardenRestaurant小题5:If you want to enjoy yourself on Sunday mornings, you can go to____.
A.GardenRestaurant
B.NewYorkMuseum
C.Mayfair School
D.CoffeeShop.
—What's the matter with you —After the long walk, my leg ()and I couldn't go any further.
A. gave out
B. gave off
C. gave in
D. gave up