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【单选题】
关于 DSAl50／ DSA200 型单臂受， ( )的叙述是错误的。
A.
(A)静态接触压力为(70±5)N
B.
(B)自动降弓时间为 1.2 S(到离网 150 mm)
C.
(C)升弓时间小于 5.4 S
D.
(D)降弓时间大于 4 S
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【单选题】回弹仪在检测前后,均应在钢砧上做( )试验。
A.
率定
B.
校准
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【多选题】回弹仪在检测前后,均应在钢砧上做率定试验,并应符合下列( )规定:
A.
率定试验应分四个方向进行,且每个方向弹击前,弹击杆应旋转90度,每个方向的回弹平均值均应为80±2
B.
率定试验应分四个方向进行,每个方向取向下弹击一次的回弹值
C.
率定试验应在中心点弹击四次,回弹平均值均应为80±2
D.
率定试验应分四个方向进行,每个方向回弹值应取连续向下弹击三次的稳定回弹结果的平均值
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【单选题】Zheng He started to sail in 1045 to “Western Seas”. In the following 28 years, he made _______ successful travels.
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other six
B.
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C.
six another
D.
another six
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【单选题】—Please say something about Zheng He. —Oh! He is the Ming dynasty explorer of ______ all the Chinese are proud.
A.
who
B.
whom
C.
whose
D.
that
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【单选题】Which of the following accords with the history of Zheng He's voyages?
A.
The voyages' aim is to conquer other countries by military force.
B.
The fleet travelled accross the Indian Ocean.
C.
The voyages were solely diplomatic actions.
D.
Zheng He's huge fleet exaggerated the strength of the Empire at the time.
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【单选题】--Could you tell me something about Zheng He? --Sure. He was a Ming Dynasty explorer __ the Chinese people are proud of.
A.
which
B.
whose
C.
whom
D.
where
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【单选题】Why does the man call the woman?
A.
He wants to visit her office.
B.
He wants to cancel an appointment.
C.
He wants to change the ticket.
D.
He wants to go to Paris with the woman.
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【单选题】回弹仪在检测前后，均应在洛式硬度HRC为60±2的钢砧上做率定试验，率定值应为()
A.
76±2
B.
78±2
C.
80±2
D.
82±2
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【多选题】砌体中烧结砖的现场检测方法主要是回弹法，对仪器设备及环境的基本要求中，下列几项必须保证（）。
A.
测试设备：HT75型砖回弹仪，其弹击动能为0.735J；
B.
指针滑块与指针导杆间的磨擦力应为0.5N±0.1N；
C.
弹击杆前端球面曲率半径应为25MM；
D.
砖回弹仪应每半年校验一次，在工程检测前后，均应对回弹仪在钢砧上做率定试验。
E.
检测环境要求：回弹仪使用时的环境温度应为-4～40℃。
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【简答题】Please say something about Zheng He.此题出自2015年福建三明市中考英语真题及答案，2015年福建三明中考英语试题及答案 —Please say something about Zheng He. —Oh! He is the Ming dynasty explorer of ______ all the Chinese are proud. A.who B.w...
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相关题目：
【单选题】回弹仪在检测前后,均应在钢砧上做( )试验。
A.
率定
B.
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查看完整题目与答案
【多选题】回弹仪在检测前后,均应在钢砧上做率定试验,并应符合下列( )规定:
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率定试验应分四个方向进行,且每个方向弹击前,弹击杆应旋转90度,每个方向的回弹平均值均应为80±2
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【单选题】Zheng He started to sail in 1045 to “Western Seas”. In the following 28 years, he made _______ successful travels.
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【单选题】—Please say something about Zheng He. —Oh! He is the Ming dynasty explorer of ______ all the Chinese are proud.
A.
who
B.
whom
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whose
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that
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【单选题】Which of the following accords with the history of Zheng He's voyages?
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The voyages' aim is to conquer other countries by military force.
B.
The fleet travelled accross the Indian Ocean.
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D.
Zheng He's huge fleet exaggerated the strength of the Empire at the time.
查看完整题目与答案
【单选题】--Could you tell me something about Zheng He? --Sure. He was a Ming Dynasty explorer __ the Chinese people are proud of.
A.
which
B.
whose
C.
whom
D.
where
查看完整题目与答案
【单选题】Why does the man call the woman?
A.
He wants to visit her office.
B.
He wants to cancel an appointment.
C.
He wants to change the ticket.
D.
He wants to go to Paris with the woman.
查看完整题目与答案
【单选题】回弹仪在检测前后，均应在洛式硬度HRC为60±2的钢砧上做率定试验，率定值应为()
A.
76±2
B.
78±2
C.
80±2
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查看完整题目与答案
【多选题】砌体中烧结砖的现场检测方法主要是回弹法，对仪器设备及环境的基本要求中，下列几项必须保证（）。
A.
测试设备：HT75型砖回弹仪，其弹击动能为0.735J；
B.
指针滑块与指针导杆间的磨擦力应为0.5N±0.1N；
C.
弹击杆前端球面曲率半径应为25MM；
D.
砖回弹仪应每半年校验一次，在工程检测前后，均应对回弹仪在钢砧上做率定试验。
E.
检测环境要求：回弹仪使用时的环境温度应为-4～40℃。
查看完整题目与答案
【简答题】Please say something about Zheng He.此题出自2015年福建三明市中考英语真题及答案，2015年福建三明中考英语试题及答案 —Please say something about Zheng He. —Oh! He is the Ming dynasty explorer of ______ all the Chinese are proud. A.who B.w...
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