Under no circumstance _____ to tell lies to parents.

A．children are allowed

B．are children allowed

C．children will allow

D．will children allow

提高渣油针入度的措施有（）。

A.减少减压侧线馏出量

B.增大减压侧线馏出量

C.降低减压真空度

D.减少减底吹汽量