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【多选题】
下列关于线和面的投影的描述,正确的是( )。A.
平行面——平行某一投影面,必垂直另外两个投影面
B.
正垂线——垂直于正面投影面,且平行于另外两个投影面
C.
铅垂线——垂直水平投影面,且平行于另外两个投影面
D.
铅垂面——垂直于正面投影面,且倾斜于其他投影面
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举一反三
【单选题】The motorways and new airport have improved the ________.
A.
capacity
B.
commuting
C.
infrastructure
【单选题】Eisenhower felt that the broad German motorways had better quality than the highways of America. 查看材料
A.
Right
B.
Wrong
C.
Not mentioned
【单选题】Fog can be a hazard on the motorways in winter.
A.
protection
B.
indication
C.
immunity
D.
danger
【简答题】销售商品收到商业汇票一张，该笔业务应编制的记账凭证是（ ）。
【单选题】Motorways are, no doubt the safest roads in Britain. Mile【21】mile, vehicle for vehicle, you are much【22】likely to be killed or seriously injured than on an ordinary road. On【23】hand, if you do have a ...
A.
for
B.
after
C.
to
D.
by
【简答题】销售商品收到商业汇票一张，该笔业务应编制的记账凭证是收款凭证。（ ）
【单选题】Motorways are, no doubt the safest roads in Britain. Mile【41】mile, vehicle for vehicle, you axe much【42】likely to be killed or seriously injured than on an ordinary road. On【43】hand, if you do have a ...
A.
for
B.
after
C.
to
D.
by
【单选题】Motorways are, no doubt the safest roads in Britain. Mile 【C1】______ mile, vehicle for vehicle, you axe much 【C2】______ likely to be killed or seriously injured than on an ordinary road. On 【C3】______...
A.
for
B.
after
C.
to
D.
by
【单选题】豪猪式开棉机合理调整尘棒间的隔距：尘棒之间从进口到出口采用（）的隔距配置方法，可增加出口处的补入气流，从而增加可纺纤维的回收。
A.
大→小→小
B.
大→小→大
C.
小→大→大
D.
大→大→大
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