是的，可以使用角色进行模块化。可以创建一个角色服务，根据用户的角色动态加载不同的模块。

下面是一个示例代码：

1. 创建 RoleService

import { Injectable } from '@angular/core';

@Injectable({
  providedIn: 'root'
})
export class RoleService {
  private roles: string[] = [];

  constructor() { }

  setRoles(roles: string[]) {
    this.roles = roles;
  }

  hasRole(role: string): boolean {
    return this.roles.indexOf(role) !== -1;
  }
}

2. 在 app.module.ts 中导入 RoleService

import { RoleService } from './role.service';

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    ...
  ],
  providers: [
    RoleService
  ],
  bootstrap: [AppComponent]
})
export class AppModule { }

3. 根据角色在路由模块中动态加载不同的模块

import { NgModule } from '@angular/core';
import { RouterModule, Routes } from '@angular/router';
import { HomeComponent } from './home/home.component';
import { AdminComponent } from './admin/admin.component';
import { UserComponent } from './user/user.component';
import { RoleService } from './role.service';

const appRoutes: Routes = [
  { path: '', component: HomeComponent },
  { path: 'admin', component: AdminComponent, canActivate: [RoleGuard], data: { roles: ['admin'] } },
  { path: 'user', component: UserComponent, canActivate: [RoleGuard], data: { roles: ['user'] } }
];

@NgModule({
  imports: [
    RouterModule.forRoot(appRoutes)
  ],
  exports: [
    RouterModule
  ]
})
export class AppRoutingModule { }

@Injectable()
export class RoleGuard implements CanActivate {
  constructor(private roleService: RoleService) {}

  canActivate(route: ActivatedRouteSnapshot): boolean {
    const roles = route.data['roles'] as string[];
    return roles.some(role => this.roleService.hasRole(role));
  }
}

在上述代码中，RoleGuard 验证用户是否有访问权限，如果用户角色匹配，则可以访问，否则将阻止访问。

通过这些步骤，我们可以通过角色进行模块化，从而更好地在应用程序中管理访问权限。