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【单选题】
水泥凝结时间的测定中,当标准试针自标准稠度的水泥净浆表面在30s内自由沉入水泥浆中距底板高度达( )mm时为到达
A.
4±1
B.
5±1
C.
6±1
D.
10±1
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【单选题】2017年下半年,数十家投身共享单车的企业宣布停止运营,企业关门倒团。这表明市场经济具有()
A.
开放性
B.
平等性
C.
法制性
D.
竞争性
【单选题】在航路上的管制称为:
A.
机场管制服务
B.
区域管制服务
C.
进近管制服务
D.
程序管制服务
【单选题】Question 21
A.
They shake their front paws.
B.
They teach them to dive.
C.
They shower with them.
D.
They shout at them.
【单选题】2017年下半年,数十家投身共享单车的企业宣布停止运营,企业关门倒闭。这表明市场经济具有( )
A.
开放性
B.
平等性
C.
法制性
D.
竞争性
【单选题】Question 21
A.
In the 1970s.
B.
In the 1960s.
C.
In the 1950s.
D.
In the 1940s.
【单选题】“人是有主观能动性的”这种观念最早源自谁?
A.
尼采
B.
马克思
C.
康德
D.
萨特
【单选题】Question 21
A.
Its subjects arc too simple to use the formula.
B.
The formula is good for this kind of writing.
C.
Its subjects require deep thoughts and investigation.
D.
Careful thinking should be throughout the process of writing.
【单选题】Question 21
A.
By forcing the customers to sign up online.
B.
From the memory of information about customers.
C.
From the IP addresses customers browsed.
D.
By using collaborative filtering.
【单选题】Question 21
A.
It has been well received by many tea drinkers.
B.
It does not bring the promised healthbenefits.
C.
It has made tea farmers' life easier.
D.
It does not have a stable market.
【单选题】Question 21
A.
It was difficult to print.
B.
It was hard to come by.
C.
It was hard and breakable.
D.
It was extremely expensive.
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