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【简答题】
按照车体结构承受载荷的方式不同,车体可分为 、 和 三类。
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参考答案:
举一反三
【单选题】对于固体制剂,延缓药物降解的措施有
A.
加入干燥剂或(和)改善包装
B.
改变生产工艺和直接压片、包衣等
C.
改变剂型
D.
制成稳定的衍生物
E.
以上措施均可以
【单选题】If you cancel now you'll _______ all my arrangemen.
A.
mess in
B.
mess with
C.
mess to
D.
mess up
【简答题】Company B concluded with Company D an export contract on CIF with L/C payment.The contract stipulated that shipment be made during August, 2006.But the time for the arrival of the L/C was not specifie...
【判断题】绝缘夹钳的定期试验周期为每6个月一次
A.
正确
B.
错误
【单选题】All the flats in the building had the same layout.
A.
color
B.
size
C.
function
D.
arrangement
【多选题】下面绝缘安全工具试验周期为半年的是()
A.
绝缘杆
B.
绝缘手套
C.
绝缘夹钳
D.
绝缘靴
【单选题】The 'contract' appearing in Paragraph 4 is quite likely referring to______.
A.
an arrangement between USA TODAY and the ' of Information Act'
B.
a commercial agreement between the Bush administration and Mr. Armstrong Williams
C.
an arrangement between the Education Department and the Ketchum public relations company
D.
a volunteer agreement between Mr. Armstrong Williams and the No Child Left Behind effort
【单选题】Rosita is said _____ in Japan, but I don’t know what city she studied in.
A.
to have studied
B.
to study
C.
to be studying
D.
to have been studying
【多选题】关于煤矿供电下列说法正确的是()。
A.
井下负荷属于一级负荷,因而井下应采用双回路供电
B.
为了避免井下电网造成的各种危害,在煤矿井下供电系统中主要采取了过电流保护、漏电保护和保护接地等保护措施
C.
煤矿机修厂属于一级负荷
D.
煤矿井下供给的都是交流电
【单选题】关于电压,下列说法不正确的是
A.
电源是提供电压的装置
B.
电压是形成电流的原因
C.
电源使正电荷聚集在电源负极,使负电荷聚集在正极,从而产生电压
D.
电路中有电流时,电路两端就一定有电压
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