18:["$","div",null,{"className":"grid gap-4 lg:grid-cols-[minmax(0,1fr)_minmax(16rem,20rem)] lg:items-start lg:gap-6","children":[["$","article",null,{"className":"surface-card animate-enter px-3.5 py-5 shadow-card sm:px-7 sm:py-8","children":[["$","header",null,{"className":"mb-4 flex flex-wrap items-center gap-2 sm:mb-5","children":[["$","span",null,{"className":"chip","children":"【单选题】"}],["$","span",null,{"className":"text-xs tabular-nums text-muted-foreground sm:text-sm","children":"1 / 7"}]]}],["$","h1",null,{"className":"rich-html min-w-0 max-w-full break-words text-base leading-relaxed text-slate-800 break-words text-lg font-medium leading-relaxed tracking-tight text-foreground sm:text-xl sm:leading-relaxed","dangerouslySetInnerHTML":{"__html":"

我国通常将下列哪一强度等级起视为高强混凝土？

"}}],["$","ol",null,{"className":"mt-4 space-y-2.5 sm:mt-5 sm:space-y-3","children":[["$","li","2090252729879367680",{"children":["$","div",null,{"className":"flex min-w-0 items-start gap-2.5 rounded-xl border px-3 py-2.5 text-sm leading-relaxed sm:gap-3 sm:px-3.5 sm:py-3 sm:text-base border-border bg-surface text-slate-700","children":[["$","span",null,{"className":"inline-flex h-7 w-7 shrink-0 items-center justify-center rounded-full border text-xs font-semibold tabular-nums sm:h-8 sm:w-8 sm:text-sm border-border-strong bg-muted text-slate-600","aria-hidden":"true","children":"A"}],["$","div",null,{"className":"rich-html min-w-0 max-w-full break-words text-base leading-relaxed text-slate-800 min-w-0 flex-1 pt-0.5 !text-inherit !leading-[inherit] [&_p]:my-0","dangerouslySetInnerHTML":{"__html":"

$\\mathrm{C}40$

"}}],null]}]}],["$","li","2090252731506757632",{"children":["$","div",null,{"className":"flex min-w-0 items-start gap-2.5 rounded-xl border px-3 py-2.5 text-sm leading-relaxed sm:gap-3 sm:px-3.5 sm:py-3 sm:text-base border-border bg-surface text-slate-700","children":[["$","span",null,{"className":"inline-flex h-7 w-7 shrink-0 items-center justify-center rounded-full border text-xs font-semibold tabular-nums sm:h-8 sm:w-8 sm:text-sm border-border-strong bg-muted text-slate-600","aria-hidden":"true","children":"B"}],["$","div",null,{"className":"rich-html min-w-0 max-w-full break-words text-base leading-relaxed text-slate-800 min-w-0 flex-1 pt-0.5 !text-inherit !leading-[inherit] [&_p]:my-0","dangerouslySetInnerHTML":{"__html":"

$\\mathrm{C}50$

"}}],null]}]}],["$","li","2090252733264171008",{"children":["$","div",null,{"className":"flex min-w-0 items-start gap-2.5 rounded-xl border px-3 py-2.5 text-sm leading-relaxed sm:gap-3 sm:px-3.5 sm:py-3 sm:text-base border-success bg-success-soft text-slate-800","children":[["$","span",null,{"className":"inline-flex h-7 w-7 shrink-0 items-center justify-center rounded-full border text-xs font-semibold tabular-nums sm:h-8 sm:w-8 sm:text-sm border-success bg-success text-white","aria-hidden":"true","children":"C"}],"$L1b","$L1c"]}]}],"$L1d"]}],"$L1e"]}],"$L1f"]}]

我国通常将下列哪一强度等级起视为高强混凝土？

参考答案

参考解析