【多选题】粗骨料在应用方面应符合下列规定( )
A.
A、混凝土结构粗骨料最大公称粒径不得大于构件截面最小尺寸的 1/4,且不得大于钢筋最小净间距的 3/4
B.
混凝土实心板,骨料的最大公称粒径不宜大于板厚的 1/3,且不得大于40mm
C.
大体积混凝土,粗骨料最大公称粒径不宜小于 30mm
【判断题】There are only single-sex rooms in youth hostels.
【单选题】What are the problems of Youth Hostels?
B.
No food supply or water.
C.
Terrible living condition.
D.
Theft and sleeping difficulty.
【单选题】Youth hostels, unlike hotels, are not _____ for the purpose of making money.
【单选题】Which of the following is not mentioned as the difference between hostels and hotels?
A.
Hotels are usually larger than hostels.
B.
Hostels are cheaper and more informal than hotels.
C.
Hostels provide more adventurous travel than hotels.
D.
There is less privacy in a hostel than a hotel.
【判断题】渐进带为14mm的渐变焦镜片,所需要的最小框高为28mm
【判断题】渐进带为14mm的渐变焦镜片,所需要的最小框高为32mm