为减小进口压力降,减轻对塔壁的冲击引起塔体振动,大型减压塔采用高速转油线。
参考答案:错
By the end of September 2013,____.number of netizens in China has hit ___record high of 604 million.
A.the;the
B.a;a
C.a;the
D.the;a
含有可续保条款的定期寿险在续保时()。(1)不需要可保证明(2)需要可保证明(3)可续保的年龄和保额有限制(4)不限制定期保险可续保的年龄和保额
A.(2)(4)
B.(1)(4)
C.(1)(3)
D.(2)(3)