A、C<sub>3sub>S B、C<sub>3sub>S和C<sub>3sub>A C、C<sub>3sub>A和C<sub>2sub>S D、C<sub>4sub>AF
A、C<sub>3sub>S B、C<sub>3sub>S和C<sub>3sub>A C、C<sub>3sub>A和C<sub>2sub>S D、C<sub>4sub>AF
A、C<sub>4sub>AF B、C<sub>2sub>S C、C<sub>3sub>A D、C<sub>3sub>S
A、C<sub>3sub>S B、C<sub>2sub>S C、C<sub>3sub>A D、C<sub>4sub>AF
A、FeO和C<sub>3sub>S B、MgO和C<sub>2sub>S C、CaO和MgO D、C<sub>2sub>S和C<sub>3sub>S
A、HF>NH<sub>3sub> B、S<sub>2sub>(g)>O<sub>2sub> C、NH<sub>3sub>>PH<sub>3sub> D、SiH<sub>4sub>>PH<sub>3sub>
A、C<sub>3sub>S B、C<sub>2sub>S C、C<sub>3sub>A D、C<sub>4sub>AF
A、天然气的总压等于或大于0.4MPa(60psi) B、且该天然气中H<sub>2sub>S分压等于或大于0.0003MPa C、或H<sub>2sub>S含量大于75mg/m<sup>3sup>(50ppm)的天然气 D、H<sub>2sub>S含量100ppm E、H<sub>2sub>S含量大于500ppm