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【多选题】
下列树种不为中国特有树种的是
A.
金钱松
B.
C.
广玉兰
D.
日本金松
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【简答题】阅读理解。 (Shiyan Daily, May3,2000) The shopping Centre will open on May 8. Everybody with today's Shiyan Daily will get a small present that day. You are welcome. Telephone: 8885619; Address: No. 16 Hong...
【多选题】活塞的正常损伤形式主要包括( )
A.
活塞环槽的磨损
B.
活塞裙部磨损
C.
活塞销座孔的磨损
D.
活塞刮伤及顶部烧蚀
【简答题】阅读理解。 (Shiyan Daily, May3, 2000) The shopping Centre will open on May 8. Everybody with today's Shiyan Daily will get a small present that day. You are welcome. Telephone: 8885619; Address: No.16 Hong...
【单选题】Choose your answers to c omplete the labels on the diagram. brain waves ____________
A.
relaxed
B.
accelerated
C.
increased
D.
lengthened
E.
reduced
F.
stopped momentarily
G.
widened
【简答题】C omplete the sentences using the words in the box.
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【单选题】灭火用的二氧化碳通常是以()装在耐压的钢瓶内。
A.
液态
B.
固态
C.
气态
D.
半液态
【多选题】活塞环的损伤形式包括( )
A.
端面磨损
B.
弹性减弱
C.
断裂
D.
变形
【多选题】活塞环的损伤形式包括( )。A、端面磨损 B、弹性减弱 C、断裂 D、变形
A.
端面磨损
B.
弹性减弱
C.
断裂
D.
变形
【单选题】灭火用的二氧化碳通常是以()态灌装在耐压刚瓶内的。
A.
B.
C.
D.
混合
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